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Class Information
Number: 548/552
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
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7524980 |
Vitamin D.sub.3 lactam derivative |
Apr. 28, 2009 |
| RE39744 |
Adamantane derivatives and process for producing them |
Jul. 24, 2007 |
| 7199250 |
Process for producing cyclic compounds |
Apr. 3, 2007 |
| 7193091 |
Method for the simultaneous production of tetrahydrofurans and pyrrolidones |
Mar. 20, 2007 |
| 7164031 |
Method for the production of 2-pyrrolidone |
Jan. 16, 2007 |
| 7129362 |
Production of 5-methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive of levulinic acid esters with aryl and alkyl amines |
Oct. 31, 2006 |
| 7030074 |
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 esters with cyano |
Apr. 18, 2006 |
| 7014697 |
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 esters with cyano |
Mar. 21, 2006 |
| 7015320 |
Process for the manufacture of optically active 3-substituted lactams by asymmetric hydrogenation of 3-alkylidenelactams |
Mar. 21, 2006 |
| 7002024 |
Production of a N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with aryl amines |
Feb. 21, 2006 |
| 6995275 |
Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds |
Feb. 7, 2006 |
| 6992195 |
Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with arylamines |
Jan. 31, 2006 |
| 6987191 |
Process for the production of N-methyl pyrrolidone using gamma butyrolactone and mixed methylamines as starting materials |
Jan. 17, 2006 |
| 6987192 |
Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds |
Jan. 17, 2006 |
| 6984736 |
Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds |
Jan. 10, 2006 |
| 6982339 |
Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with aryl amines |
Jan. 3, 2006 |
| 6930126 |
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 ESTERS WITH CYANO |
Aug. 16, 2005 |
| 6916842 |
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 ESTERS WITH CYANO |
Jul. 12, 2005 |
| 6906200 |
Production of N-vinyl pyrrolidone |
Jun. 14, 2005 |
| 6828277 |
Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds |
Dec. 7, 2004 |
| 6828278 |
Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with arly amines |
Dec. 7, 2004 |
| 6818593 |
Production of 5-Methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with nitro compounds |
Nov. 16, 2004 |
| 6726811 |
Method of purifying N-(2-hydroxyethy)-2-pyrrolidone |
Apr. 27, 2004 |
| 6706893 |
Methods of making pyrrolidones |
Mar. 16, 2004 |
| 6673920 |
Method for the production of N-alkenyl-amides |
Jan. 6, 2004 |
| 6670483 |
Methods of making pyrrolidones |
Dec. 30, 2003 |
| 6632951 |
Methods of making pyrrolidones |
Oct. 14, 2003 |
| 6624303 |
Method for producing N-alkenyl amides |
Sep. 23, 2003 |
| 6603021 |
Methods of making pyrrolidones |
Aug. 5, 2003 |
| 6489474 |
Process for producing amide compound |
Dec. 3, 2002 |
| 6436243 |
Process for recovering N-vinyl-2-pyrrolidone |
Aug. 20, 2002 |
| 6392104 |
Adamantane derivatives and process for producing them |
May. 21, 2002 |
| 6348601 |
Preparation of N-methyl-2-pyrrolidone (NMP) |
Feb. 19, 2002 |
| 6248902 |
Process for the production of N-methyl pyrrolidone |
Jun. 19, 2001 |
| 6008375 |
Process for manufacturing 2-pyrrolidone or N-alkylpyrrolidones |
Dec. 28, 1999 |
| 5994562 |
Preparation of N-alkenylcarboxamides |
Nov. 30, 1999 |
| 5958821 |
Oxidation catalytic system and oxidation process using the same |
Sep. 28, 1999 |
| 5945544 |
Process for production of N-vinyllactam |
Aug. 31, 1999 |
| 5847213 |
Process for production of tertiary amine compound |
Dec. 8, 1998 |
| 5700946 |
Process for production of N-vinyl compound |
Dec. 23, 1997 |
| 5670639 |
Preparation of n-vinyllactams |
Sep. 23, 1997 |
| 5665889 |
Method for the production of N-vinyl-2-pyrrolidone by vinylation |
Sep. 9, 1997 |
| 5641881 |
Preparation of N-alkenylcarboxamides |
Jun. 24, 1997 |
| 5625076 |
Catalyst for production of tertiary N-alkenyl carboxylic acid amide, and process for production of tertiary N-alkenyl carboxylic acid amide using said catalyst |
Apr. 29, 1997 |
| 5571913 |
Process for preparing a lactam |
Nov. 5, 1996 |
| 5569770 |
Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase dehydration reaction at atomospheric pressure |
Oct. 29, 1996 |
| 5539102 |
Production method for sulfamide |
Jul. 23, 1996 |
| 5508396 |
Process for preparing n-alkyllactams |
Apr. 16, 1996 |
| 5496958 |
Preparation of 5-vinylpyrrolidones |
Mar. 5, 1996 |
| 5478950 |
Process for producing pyrrolidone and N-alkyl pyrrolidones |
Dec. 26, 1995 |
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