| Class 549 | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| This Class 549 is considered to be an integral part of Class 260 (see the Class 260 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 260. | ||
| ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) |
 HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) |
![[List of Pre Grant Publications for class 549 subclass 1]](../as.gif) | ![[List of Patents for class 549 subclass 1]](../ps.gif) | 1 |  Sulfur containing hetero ring (e.g., thiiranes, etc.) |
| | 2 |  With preservative or stabilizer |
| | 3 | Heavy metal or aluminum containing |
| | 4 | Boron or silicon containing |
| | 5 | Phosphorus attached directly or indirectly to the hetero ring by nonionic bonding |
| | 9 | The hetero ring has at least seven members |
| | 10 |  Plural ring hetero atoms in the hetero ring |
| | 12 | Polycyclo ring system having at least three cyclos and having the hetero ring as one of the cyclos |
| | 13 | The hetero ring is six-membered |
| | 14 | Plural ring hetero atoms in the hetero ring |
| | 15 |  Polycyclo ring system having the hetero ring as one of the cyclos |
| | 18 | Three or more ring hetero atoms in the hetero ring |
| | 20 | Two ring sulfurs in the hetero ring |
| | 23 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 24 | The polycyclo ring system has at least four cyclos |
| | 26 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 28 | Chalcogen or nitrogen attached directly to the hetero ring by nonionic bonding |
| | 29 | The hetero ring is five-membered |
| | 30 | Plural ring hetero atoms in the hetero ring |
| | 31 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 34 | Three or more ring hetero atoms in the hetero ring |
| | 35 | Two ring sulfurs in the hetero ring |
| | 36 |  Chalcogen bonded directly to ring carbon of the hetero ring |
| | 38 | Nitrogen attached directly to the hetero ring by nonionic bonding |
| | 39 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 40 | Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
| | 41 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 42 | Tetracyclo ring system having the hetero ring as one of the cyclos |
| | 43 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 44 | Chalcogen attached directly to the tricyclo ring system by nonionic bonding |
| | 45 |  Chalcogen attached directly to the hetero ring by nonionic bonding |
| | 46 |  Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
| | 47 | Halogen attached directly to the tricyclo ring system by nonionic bonding |
| | 48 | Nitrogen attached directly or indirectly to the tricyclo ring system by nonionic bonding |
| | 49 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 50 | Plural ring hetero atoms in the bicyclo ring system |
| | 51 | Chalcogen attached directly to the bicyclo ring system by nonionic bonding |
| | 52 | Chalcogen attached directly to the hetero ring by nonionic bonding |
| | 53 | Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
| | 54 | Plural chalcogens bonded directly to the bicyclo ring system |
| | 55 | Nitrogen attached directly or indirectly to the bicyclo ring system by nonionic bonding |
| | 56 | Halogen attached directly or indirectly to the bicyclo ring system by nonionic bonding |
| | 57 | Nitrogen or a -C(=X)- group, wherein X is chalcogen, attached directly to the bicyclo ring system by nonionic bonding |
| | 58 | Chalcogen attached indirectly to the bicyclo ring system by nonionic bonding |
| | 59 | Additional hetero ring containing |
| | 61 | Cyano bonded directly to the hetero ring |
| | 62 | Chalcogen bonded directly to ring carbon of the hetero ring |
| | 63 | Nitrogen attached directly to the hetero ring by nonionic bonding |
| | 64 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 65 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 66 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 67 | Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding |
| | 68 | Nitrogen attached directly to the hetero ring by nonionic bonding |
| | 70 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 71 | The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 72 | Nitrogen or chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 73 | Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
| | 74 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 78 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 79 | The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 80 | Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing |
| | 81 | Halogen attached directly to the hetero ring by nonionic bonding |
| | 83 | The compound consists of the ring sulfur, carbon, and hydrogen |
| | 84 | Process of forming the hetero ring from acyclic reactants only |
| | 86 | Process of alkylating the hetero ring |
| | 87 | Plural chalcogens double bonded directly to ring sulfur of the hetero ring |
| | 88 | The hetero ring is four-membered |
| | 90 | The hetero ring is three-membered and has chalcogen or nitrogen attached directly or indirectly thereto by nonionic bonding |
| | 200 | Oxygen containing hetero ring (e.g., dioxirane, etc.) |
| | 201 | With preservative or stabilizer |
| | 202 | Oxirane containing compound with preservative or stabilizer |
| | 203 | Cyclic anhydride containing compound with preservative or stabilizer |
| | 204 | Lactone containing compound with preservative or stabilizer |
| | 205 | Compound in which the hetero ring is five-membered with preservative or stabilizer |
| | 206 | Heavy metal or aluminum containing |
| | 207 | Arsenic containing |
| | 208 | The hetero ring has three members or at least seven members |
| | 209 | The metal is bonded directly to carbon, which carbon is a ring carbon of the hetero ring or which carbon is attached directly or indirectly to the hetero ring by nonionic bonding |
| | 210 | The metal is bonded directly to chalcogen, which chalcogen is attached directly or indirectly to the hetero ring by nonionic bonding |
| | 211 | The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 212 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 213 | Boron containing |
| | 214 | Silicon containing |
| | 216 | Phosphorus bonded directly to the hetero ring |
| | 218 | Phosphorus attached indirectly to the hetero ring by nonionic bonding |
| | 219 | Oxirane ring containing |
| | 220 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 221 | Plural ring oxygens in the hetero ring |
| | 222 | Chalcogen bonded directly to the hetero ring |
| | 224 | The xanthene ring system is three cyclos of a polycyclo ring system having at least four rings (e.g., benz(c)fluorans, etc.) |
| | 225 | Nitrogen bonded directly to the xanthene ring system (e.g., rhodols, aminofluorans, etc.) |
| | 228 | The hetero ring contains -O-C(=X)-O- as part of its structure, wherein X is chalcogen (e.g., cyclic carbonates, etc.) |
| | 231 | Cyclic anhydrides (i.e., -C(=X)OC(=X)-, wherein the X's are the same or diverse chalcogens, is part of the hetero ring) |
| | 232 | The cyclic anhydride has at least six members and is a cyclo in a polycyclo ring system |
| | 233 | The cyclic anhydride is five-membered (e.g., succinic anhydride, etc.) |
| | 234 | Polycyclo ring system having the cyclic anhydride as one of the cyclos |
| | 235 | Tetracyclo ring system having the cyclic anhydride as one of the cyclos |
| | 236 | Tricyclo ring system having the cyclic anhydride as one of the cyclos |
| | 237 | Two of the cyclos share at least three ring members (i.e., bridged) |
| | 239 | Plural ring oxygens in the tricyclo ring system |
| | 240 | Bicyclo ring system having the cyclic anhydride as one of the cyclos |
| | 241 | Plural bicyclo ring systems each having the cyclic anhydride as one of the cyclos |
| | 242 | Having -C(=X)-, wherein X is chalcogen, bonded directly to at least one of the bicyclo ring systems |
| | 243 | Nitrogen or additional chalcogen bonded directly to the bicyclo ring system |
| | 244 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the bicyclo ring system |
| | 245 | The -C(=X)- is part of a -C(=X)XH group, wherein the X's are the same or diverse chalcogens, or salt thereof (e.g., trimellitic anhydride, etc.) |
| | 246 | Halogen bonded directly to the bicyclo ring system |
| | 247 | Phthalic anhydride per se |
| | 252 | Plural hetero rings |
| | 253 | Nitrogen or additional chalcogen attached directly or indirectly to the cyclic anhydride by nonionic bonding |
| | 254 | Halogen attached directly or indirectly to the cyclic anhydride by nonionic bonding |
| | 255 | Acyclic carbon chain containing carbon to carbon unsaturation bonded directly to the cyclic anhydride |
| | 256 | Preparing by oxidation |
| | 261 | Double bond between ring members of the cyclic anhydride |
| | 263 | Lactones (i.e., -C(=X)O-, wherein X is chalcogen, is part of the hetero ring) |
| | 264 | Spiro |
| | 266 | The lactone ring has at least seven members |
| | 267 | Plural ring oxygens in the lactone ring |
| | 268 | Polycyclo ring system having the lactone ring as one of the cyclos |
| | 271 | Additional chalcogen attached directly or indirectly to the lactone ring by nonionic bonding |
| | 272 | Preparing from a cyclic ketone (i.e., a ketone where the carbonyl is part of a ring) |
| | 273 | The lactone ring is six-membered |
| | 274 | Plural ring oxygens in the lactone ring |
| | 275 | Polycyclo ring system having the lactone ring as one of the cyclos |
| | 276 | Tetracyclo ring system having the lactone ring as one of the cyclos |
| | 277 | The tetracyclo ring system consists of four six-membered cyclos |
| | 279 | Ring oxygen bonded directly to ring carbon which is a member of two cyclos in the tetracyclo ring system |
| | 280 | Tricyclo ring system having the lactone ring as one of the cyclos |
| | 281 | Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
| | 282 | Plural ring oxygens in the tricyclo ring system |
| | 283 | Bicyclo ring system having the lactone ring as one of the cyclos |
| | 284 | Plural bicyclo ring systems each having the lactone ring as one of the cyclos |
| | 285 | Additional acyclic chalcogen bonded directly to the lactone ring |
| | 287 | Acyclic -C(=X)-, wherein X is chalcogen, bonded directly to the lactone ring |
| | 288 | Nitrogen bonded directly to the bicyclo ring system |
| | 289 | The other cyclo of the bicyclo ring system is a six-membered carbocyclic ring to which chalcogen is directly attached |
| | 290 | The bicyclo lactone consists of two six-membered rings and is unsubstituted or hydrocarbyl substituted only |
| | 291 | Acyclic -C(=X)-, wherein X is chalcogen, bonded directly to the lactone ring |
| | 292 | Additional chalcogen bonded directly to the lactone ring |
| | 293 | Nitrogen attached directly or indirectly to the lactone ring by nonionic bonding |
| | 294 | Double bond between ring members of the lactone ring |
| | 295 | The lactone ring is five-membered |
| | 296 | Plural ring oxygens in the lactone ring |
| | 297 | Polycyclo ring system having the lactone ring as one of the cyclos |
| | 298 | Tetracyclo ring system having the lactone ring as one of the cyclos |
| | 299 | Tricyclo ring system having the lactone ring as one of the cyclos |
| | 300 | Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
| | 301 | The tricyclo ring system consists of the lactone ring, a five-membered carbocyclic ring, and a three-membered carbocyclic ring |
| | 302 | Bicyclo ring system having the lactone ring as one of the cyclos |
| | 303 | Nitrogen bonded directly to the lactone ring |
| | 304 | Nitrogen attached indirectly to the lactone ring by acyclic nonionic bonding |
| | 305 | Chalcogen attached indirectly to the lactone ring by acyclic nonionic bonding |
| | 306 | Plural ring oxygens in the bicyclo ring system |
| | 307 | The other cyclo of the bicyclo ring system is benzene (e.g., phthalides, etc.) |
| | 308 | Two carbocyclic rings bonded directly to the same ring atom of the lactone ring |
| | 310 | Additional chalcogen bonded directly to the bicyclo ring system |
| | 311 | The bicyclo ring system consists of two five-membered rings |
| | 313 | Additional chalcogen bonded directly to the lactone ring |
| | 314 | At least two additional chalcogens bonded directly to the lactone ring |
| | 315 | Double bond between ring members of the lactone ring or chalcogen double bonded directly at the 3- or 4-position of the lactone ring (e.g., ascorbic acid, etc.) |
| | 318 | Acyclic -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the lactone ring by nonionic bonding |
| | 319 | Plural alkyl groups bonded directly to the same ring carbon of the lactone ring (e.g., pantolactone, etc.) |
| | 320 | Plural hetero rings |
| | 321 | Nitrogen attached directly or indirectly to the lactone ring by acyclic nonionic bonding |
| | 322 | Having -C(=X), wherein X is chalcogen, bonded directly to the lactone ring |
| | 323 | Chalcogen attached indirectly to the lactone ring by nonionic bonding |
| | 324 | Halogen attached directly or indirectly to the lactone ring by nonionic bonding |
| | 325 | Preparing by hydrogenation of cyclic anhydrides |
| | 326 | Preparing from compound containing -COO- group |
| | 327 | Acyclic carbon double bonded directly to a ring carbon of a four-membered lactone ring |
| | 328 | Four-membered lactone ring formed |
| | 330 | Spiro |
| | 331 | The spiro includes a hetero ring |
| | 332 | The spiro includes a three- or four-membered hetero ring |
| | 333 | Plural ring oxygens in a spiro hetero ring |
| | 334 | Both rings which form the spiro are hetero rings |
| | 335 | Two six-membered hetero rings, which each contain plural ring oxygens, form the spiro (e.g., spirobi-(meta-dioxane), etc.) |
| | 336 | Polycyclo ring system having one of the two rings which form the spiro as one of the cyclos |
| | 337 | Additional hetero ring containing |
| | 339 | Spiro ring is a cyclo in a tricyclo-carbocyclic ring system |
| | 341 | The spiro hetero ring is five-membered |
| | 343 | Both rings which form the spiro are hetero rings |
| | 344 | Polycyclo ring system having one of the two hetero rings which form the spiro as one of the cyclos |
| | 345 | Bicyclo ring system having the spiro hetero ring as one of the cyclos (e.g., griseofulvin, etc.) |
| | 346 | The hetero ring has at least seven members |
| | 347 | Plural ring oxygens in the hetero ring |
| | 348 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 349 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 350 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 352 | Three or more ring oxygens in the hetero ring |
| | 354 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 356 | The hetero ring is six-membered |
| | 357 | Plural ring oxygens in the hetero ring (e.g., 1,2-dioxin, etc.) |
| | 358 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 359 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 360 | Two of the cyclos share at least three ring members (i.e., bridged) |
| | 361 | Three or more ring oxygens in the tricyclo ring system (e.g., actinospectacin, etc.) |
| | 362 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 367 | Three or more ring oxygens in the hetero ring |
| | 369 | The ring oxygens are in the 1,3-positions of the hetero ring (e.g., 1,3 dioxane, etc.) |
| | 370 | Plural hetero rings |
| | 371 | Nitrogen bonded directly to the hetero ring |
| | 372 | Chalcogen or -C(=X), wherein X is chalcogen, bonded directly to the hetero ring |
| | 373 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 374 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 376 | Preparing by reacting an aldehyde with a compound containing acyclic carbon to carbon unsaturation |
| | 377 | The ring oxygens are in the 1,4-positions of the hetero ring (e.g., 1,4 dioxane, etc.) |
| | 381 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 382 | Pentacyclo ring system having the hetero ring as one of the cyclos |
| | 383 | Tetracyclo ring system having the hetero ring as one of the cyclos |
| | 385 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 386 | Two of the cyclos share at least three ring members or ring carbon is shared by the three cyclos (e.g., bridged or peri compounds, etc.) |
| | 387 | Plural ring oxygens in the tricyclo ring system |
| | 388 | The tricyclo ring system consists of three six-membered cyclos (e.g., xanthene, etc.) |
| | 389 | Naphtho-pyrans (including hydrogenated) |
| | 390 | Dibenzo(b,d)pyrans (including hydrogenated) |
| | 392 | Chalcogen bonded directly to the hetero ring |
| | 394 | Nitrogen bonded directly to the tricyclo ring system |
| | 395 | Acyclic chalcogen bonded directly to the hetero ring |
| | 396 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 397 | The two cyclos share at least three ring members (i.e., bridged) |
| | 398 | The bicyclo ring system consists of the hetero ring and a six-membered carbocyclic ring |
| | 399 | Chalcogen bonded directly to the hetero ring |
| | 400 | Plural chalcogens bonded directly to the hetero ring |
| | 401 | Chalcogen bonded directly to the ring carbon para to the ring oxygen (e.g., chromones, etc.) |
| | 404 | Nitrogen bonded directly to the bicyclo ring system |
| | 405 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the bicyclo ring system |
| | 406 | Carbocyclic ring bonded directly to the hetero ring of the bicyclo ring system (e.g., flavanes, etc.) |
| | 407 | Chalcogen or nitrogen attached indirectly to the hetero ring by acyclic nonionic bonding |
| | 408 | Chalcogen bonded directly to the carbocyclic ring of the bicyclo ring system (e.g., tocopherols, etc.) |
| | 409 | Chalcogen double bonded or plural chalcogens bonded directly to the carbocyclic ring (e.g., coenzyme Q, etc.) |
| | 410 | Chalcogen of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, bonded directly to the carbocyclic ring of the bicyclo ring system (e.g., tocopherol esters, etc.) |
| | 411 | Preparing from 1,4-di-oxygen substituted carbocyclic ring (e.g., of p benzoquinones, p-hydroquinones, etc.) |
| | 412 | Processes for chemical modification of substituents on the carbocyclic ring of the bicyclo ring system (e.g., alkylation of tocopherols, etc.) |
| | 413 | Purification or recovery |
| | 414 | Plural hetero rings |
| | 416 | Chalcogen bonded directly to the hetero ring |
| | 417 | Plural chalcogens bonded directly to the hetero ring |
| | 419 | Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
| | 420 | Having -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
| | 421 | Alicyclic ring bonded directly to the chalcogen |
| | 422 | Five-membered carbocyclic ring having the hetero ring as part of one substituent and -COO- as part of another substituent (e.g., prostaglandin intermediates, etc.) |
| | 424 | Nitrogen bonded directly to the hetero ring |
| | 425 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 426 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 427 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 428 | Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
| | 429 | The hetero ring is five-membered |
| | 430 | Plural ring oxygens in the hetero ring |
| | 431 | Three or more ring oxygens in the hetero ring (e.g., ozonides, etc.) |
| | 432 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 433 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 434 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 435 | Plural hetero rings |
| | 436 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the bicyclo ring system |
| | 437 | Acyclic chalcogen bonded directly to the bicyclo ring system |
| | 438 | Having -C(=X)-, wherein X is chalcogen, attached indirectly to the bicyclo ring system by nonionic bonding |
| | 439 | Nitrogen bonded directly to the bicyclo ring system |
| | 440 | Nitrogen attached indirectly to the bicyclo ring system by nonionic bonding |
| | 441 | The nitrogen is bonded directly to a -C(=X)- group, wherein X is chalcogen |
| | 442 | The nitrogen is attached directly to carbon by a double or triple bond |
| | 443 | Chalcogen attached indirectly to the bicyclo ring system by nonionic bonding |
| | 445 | Chalcogen attached indirectly to the ring system by nonionic bonding |
| | 448 | Plural hetero rings |
| | 449 | Nitrogen or chalcogen bonded directly to the hetero ring |
| | 450 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 451 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 453 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 455 | Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
| | 456 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 457 | Tetracyclo ring system having the hetero ring as one of the cyclos |
| | 458 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 459 | Two of the cyclos share at least three ring members (i.e., bridged) |
| | 460 | Dibenzofurans (including hydrogenated) |
| | 462 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 463 | The two cyclos share at least three ring members (i.e., bridged) |
| | 464 | Plural ring oxygens in the bicyclo ring system |
| | 465 | The bicyclo ring system consists of two five-membered cyclos |
| | 466 | Acyclic chalcogen bonded directly to the hetero ring |
| | 467 | Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding |
| | 468 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 469 | Benzene ring bonded directly to the hetero ring |
| | 470 | Chalcogen of -C(=X)X-, wherein the X's are the same or diverse chalcogens, bonded directly to the carbocyclic ring of the bicyclo ring system |
| | 471 | Plural double bonds between ring members of the hetero ring |
| | 472 | Plural hetero rings |
| | 473 | Acyclic -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the hetero ring by nonionic bonding |
| | 474 | Cyano bonded directly to the hetero ring |
| | 475 | Chalcogen bonded directly to the hetero ring |
| | 476 | Plural chalcogens bonded directly to the hetero ring |
| | 477 | Chalcogen double bonded directly to the hetero ring |
| | 478 | Having -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the hetero ring by nonionic bonding |
| | 479 | Double bond between ring members of the hetero ring |
| | 480 | Nitrogen bonded directly to the hetero ring |
| | 483 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 484 | The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 485 | Plural -C(=X)X- groups bonded directly to the hetero ring |
| | 486 | The carbon of the -C(=X)X- group is bonded directly at the 3-position of the hetero ring |
| | 487 | Nitrogen bonded directly to the -C(=X)- group |
| | 488 | Additional chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 489 | Preparation of furfural (i.e., furan-2-aldehyde) |
| | 490 | Purification or recovery of furfural |
| | 491 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 492 | Nitrogen and the hetero ring are single bonded directly to the same acyclic saturated hydrocarbon group |
| | 493 | The nitrogen is bonded directly to a -C(=X)- group, wherein X is chalcogen |
| | 494 | Having -C(=X)-, wherein X is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
| | 495 | Chalcogen attached indirectly to the hetero ring by acyclic nonionic bonding |
| | 496 | Having -C(=X)-, wherein X is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
| | 497 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 498 | The chalcogen, X, is in a -C(=X)- group |
| | 502 | Plural chalcogens attached indirectly to the hetero ring by nonionic bonding |
| | 503 | Preparing by hydrogenation of furfural |
| | 504 | Halogen attached directly or indirectly to the hetero ring by nonionic bonding |
| | 505 | Plural double bonds between ring members of the hetero ring |
| | 507 | One double bond between ring members of the hetero ring |
| | 508 | Preparing from compound containing -COO- group |
| | 509 | Preparing from a hydroxy containing compound |
| | 510 | The hetero ring is four-membered |
| | 512 | The hetero ring is three-membered consisting of one oxygen and two carbons |
| | 513 | Processes |
| | 514 | Epihalohydrin, glycerol monohalohydrin or glycerol dihalohydrin reactant |
| | 515 | Glycidyl ester formed by bonding the oxy of a -COO- group directly to an acyclic carbon which is bonded directly to an oxirane ring |
| | 516 | Glycidyl ether formed by bonding oxygen directly to an acyclic carbon which is bonded directly to an oxirane ring |
| | 518 | Oxirane ring formed |
| | 519 | Carbonyl of aldehyde or ketone reacted to form oxirane ring |
| | 520 | By dehydrohalogenation of a halohydrin or by reacting a hypohalite or hypohalous acid with an ethylenically unsaturated compound at the site of unsaturation |
| | 521 | Oxirane ring and chalcogen, cyano, nitrogen, or halogen are bonded directly to the same carbon (e.g., glycidyl ester formed, etc.) |
| | 522 | Oxirane ring is unsubstituted or hydrocarbyl substituted only |
| | 523 | Epoxidation at site of ethylenic unsaturation |
| | 524 | Liquid phase epoxidation |
| | 525 | Organic peracid utilized |
| | 526 |  In situ formation of the organic peracid from carboxylic acid and hydrogen peroxide |
| | 528 | Epoxidizing unsaturated fat or fatty oil, or unsaturated derivative thereof |
| | 529 | Organic hydroperoxide reactant |
| | 531 | Hydrogen peroxide utilized |
| | 532 | Air or molecular oxygen utilized |
| | 534 | Silver containing catalyst utilized |
| | 539 | Ether or -COO- group formed |
| | 540 | Isomerization, halogenation, hydrogenation, or dehydrohalogenation to form compound |
| | 541 | Purification or recovery |
| | 543 | Polycyclo ring system having the hetero ring as one of the cyclos |
| | 544 | Tetracyclo ring system having the hetero ring as one of the cyclos |
| | 545 | Tricyclo ring system having the hetero ring as one of the cyclos |
| | 546 | Bicyclo ring system having the hetero ring as one of the cyclos |
| | 548 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 550 | Cyano, nitrogen, or halogen bonded directly to the hetero ring |
| | 551 | Nitrogen attached indirectly to the hetero ring by nonionic bonding |
| | 552 | Cyano or nitrogen and the hetero ring bonded directly to the same carbon |
| | 553 | The nitrogen is bonded directly to a -C(=X)- group, wherein X is chalcogen |
| | 554 | Chalcogen attached indirectly to the hetero ring by nonionic bonding |
| | 555 | Chalcogen and the hetero ring bonded directly to the same carbon (e.g., glycidyl ethers, etc.) |
| | 556 | Sulfur or -C(=X)-, wherein X is chalcogen, attached indirectly to the hetero ring by nonionic bonding |
| | 557 | The chalcogen, X, is part of a -C(=X)X- group or a -X-X- group, wherein the X's are the same or diverse chalcogens (e.g., -COO-HCH-oxirane, etc.) |
| | 558 | Halogen attached indirectly to the hetero ring by nonionic bonding |
| | 560 | Carbocyclic ring containing |
| | 561 | The chalcogen, X, is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 563 | Halogen attached indirectly to the hetero ring by nonionic bonding |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |