Oxidation of Benzylic Alcohols and Ethers to Carbonyl Derivatives by Nitric Acid in Dichloromethane
作者:Paolo Strazzolini、Antonio Runcio
DOI:10.1002/ejoc.200390090
日期:2003.2
Nitricacid in dichloromethane may be successfully employed for the oxidation of benzylic alcohols and ethers to the corresponding carbonyl compounds. The proposed method proved to be of general applicability, affording very good yields of aldehydes and ketones and showing interesting chemoselectivity in many instances, allowing competitive aromatic nitration to be avoided, as well as − in the case
Piperidinyl-and piperazinyl-sulfonylmethyl hydroxamic acids and their use as protease inhibitors
申请人:Barta E. Thomas
公开号:US20050009838A1
公开(公告)日:2005-01-13
This invention is directed generally to proteinase (also known as “protease”) inhibitors, and, more particularly, to piperidinyl- and piperazinyl-sulfonylmethyl hydroxamic acids that, inter alia, inhibit matrix metalloproteinase (also known as “matrix metalloprotease” or “MMP”) activity and/or aggrecanase activity. Such hydroxamic acids generally correspond in structure to the following formula:
(wherein A
1
, A
2
, Y, E
1
, E
2
, E
3
, and R
x
are as defined in this specification), and further include salts of such compounds. This invention also is directed to compositions of such hydroxamic acids, intermediates for the syntheses of such hydroxamic acids, methods for making such hydroxamic acids, and methods for treating conditions (particularly pathological conditions) associated with MMP activity and/or aggrecanase activity.
Piperidinyl- and piperazinyl-sulfonylmethyl hydroxamic acids and their use as protease inhibitors
申请人:McDonald J. Joseph
公开号:US20050209278A1
公开(公告)日:2005-09-22
This invention is directed generally to proteinase (also known as “protease”) inhibitors, and, more particularly, to piperidinyl- and piperazinyl-sulfonylmethyl hydroxamic acids that, inter alia, inhibit matrix metalloproteinase (also known as “matrix metalloprotease” or “MMP”) activity and/or aggrecanase activity. Such hydroxamic acids generally correspond in structure to the following formula:
(wherein A
1
, A
2
, Y, E
1
, E
2
, E
3
, and R
x
are as defined in this specification), and further include salts of such compounds. This invention also is directed to compositions of such hydroxamic acids, intermediates for the syntheses of such hydroxamic acids, methods for making such hydroxamic acids, and methods for treating conditions (particularly pathological conditions) associated with MMP activity and/or aggrecanase activity.
[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY ENRICHED 3-AMINOPIPERIDINE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UNE 3-AMINOPIPÉRIDINE ENRICHIE EN ÉNANTIOMÈRES
申请人:REUTER CHEMISCHE APPBAU KG
公开号:WO2014128139A1
公开(公告)日:2014-08-28
The present invention relates to a process for the preparation of enantiomerically enriched 3-aminopiperidine, and in particular of its R-enantiomer (R)-3-aminopiperidine. The invention also relates to an enantiomerically enriched intermediate of said process and to specific acid-addition salts of 3-aminopiperidine (hereinafter also APIP) that are useful for obtaining a single enantiomer of APIP, and to crystalline (R)-3-aminopiperidine-dihydrochloride-monohydrateand crystalline (S)-3-aminopiperidine-dihydrochloride-monohydrate.
Low pressure process for manufacture of 3-dimethylaminopropylamine (DMAPA)
申请人:——
公开号:US20040147784A1
公开(公告)日:2004-07-29
An improved process for the production of
3
-dimethylaminopropylamine in high purity from N,N-dimethylaminopropionitrile utilizing a low pressure hydrogenation process is described. The basic process comprises contacting the nitrile with hydrogen at low pressure in the presence of a catalyst under conditions sufficient to effect the conversion of the nitrile to the primary amine product.