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Class Information
Number: 548/553
Name: Organic compounds -- part of the class 532-570 series > 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) > Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) > Chalcogen attached directly to the five-membered hetero ring by nonionic bonding (e.g., 3-pyrrolidinols, etc.) > Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.) > Processes of forming 2-pyrrolidone which is unsubstituted or alkyl or alkenyl substituted only > Directly from a cyano containing compound (e.g., from succinonitrile, etc.)
Description: Processes wherein the 2-pyrrolidone compound is prepared directly from a compound which contains the cyano group, -C-N.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612216 |
Production of N-(methyl aryl)-2-lactam, N-(methyl cycloalkyl)-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl cyano compounds |
Nov. 3, 2009 |
| 7458490 |
Article carrier assembly with removable stowable cross-rails and latching mechanism therefor |
Dec. 2, 2008 |
| 6906201 |
Production of N-(methyl aryl)-2-lactam, N-(methyl cycloalkyl)-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl cyano compounds |
Jun. 14, 2005 |
| 6841520 |
Production of 5-methyl-N-(methyl aryl)-2-pyrrolidone, 5-methyl-N-(methyl cycloalkyl)-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with cyano compou |
Jan. 11, 2005 |
| 6100396 |
Method for purifying lactams |
Aug. 8, 2000 |
| 5739324 |
Preparation of caprolactam |
Apr. 14, 1998 |
| 5646277 |
Preparation of caoprolactam |
Jul. 8, 1997 |
| 5536723 |
S-nitroso derivatives of hydrazinoacetic acids, 1-[(acylthio and (mercapto)-1-oxoalkyl]-1,2,34-Tetrahydroquinoline-2-carboxylic acids and alanyl prolines and isoquinolines |
Jul. 16, 1996 |
| 5498734 |
Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis |
Mar. 12, 1996 |
| 5200527 |
Process for the production of 2-azabicyclo [2.2.1] hept-5-en-3-one |
Apr. 6, 1993 |
| 5136051 |
Preparation of 2-pyrrolidinones |
Aug. 4, 1992 |
| 4943633 |
Catalytic preparation of cyanoalkyl lactams |
Jul. 24, 1990 |
| 4886813 |
Proline derivatives |
Dec. 12, 1989 |
| 4874752 |
Benzoquinone derivatives and production thereof |
Oct. 17, 1989 |
| 4808573 |
Carboxyalkyl dipeptides and anti-hypertensive use thereof |
Feb. 28, 1989 |
| 4628085 |
Use of silica catalyst for selective production of lactams |
Dec. 9, 1986 |
| 4625023 |
Selective conversion of aliphatic and aromatic aminonitriles and/or dinitriles into lactams |
Nov. 25, 1986 |
| 4325872 |
Process for the preparation of a 2-pyrrolidone |
Apr. 20, 1982 |
| 4279820 |
Process for preparing 2-pyrrolidones |
Jul. 21, 1981 |
| 4250093 |
Process for the preparation of laotams |
Feb. 10, 1981 |
| 4216151 |
Process for the recovery of 2-pyrrolidone |
Aug. 5, 1980 |
| 4193925 |
Process for preparing 2-pyrrolidone |
Mar. 18, 1980 |
| 4183866 |
Method for preparing 3-cyanopropanol and 2-pyrrolidone |
Jan. 15, 1980 |
| 4181662 |
2-Pyrrolidone production |
Jan. 1, 1980 |
| 4152331 |
Process for the preparation of N-substituted 2-pyrrolidones |
May. 1, 1979 |
| 4123438 |
Process for preparing 2-pyrrolidones |
Oct. 31, 1978 |
| 4042599 |
Process for producing 2-pyrrolidone |
Aug. 16, 1977 |
| 4036836 |
Process for producing 2-pyrrolidone |
Jul. 19, 1977 |
| 4012418 |
Process for the preparation of pyrrolidone-2 |
Mar. 15, 1977 |
| 3966763 |
Process for producing 2-pyrrolidone |
Jun. 29, 1976 |
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