The synthesis of tetradentate salens derived from (3R,4R)-N-substituted-3,4-diaminopyrrolidines and their application in the enantioselective trimethylsilylcyanation of aromatic aldehydes
摘要:
The in situ formed Ti(IV) complexes of pyrrolidine-based chiral salen ligands derived from natural L-tartaric acid were evaluated as catalysts in the enantioselective trimethylsilylcyanation of aromatic aldehydes. The different activity and selectivity of the catalysts in the formation of the products were found to be dependent on the N-substituent of the pyrrolidine. (C) 2013 Elsevier Ltd. All rights reserved.
Unexpected hydrolysis of diacyl tartaricacids during their reaction with primary amines yielded new monoacyl tartrimides.
二酰基酒石酸在与伯胺反应期间意外水解,产生新的单酰基酒石酰亚胺。
Asymmetric hydrogenations catalysed by diphosphinite rhodium complexes derived from natural tartaric acid
作者:Jean Bourson、Laureano Oliveros
DOI:10.1016/s0022-328x(00)89118-4
日期:1982.4
Two chiraldiphosphinites, derived from natural tartaric acid, have been prepared and used as ligands for the preparation of two asymmetrichydrogenation catalysts, which were isolated in a crystalline state. After several weeks storage, these catlysts are still effective in the asymmetrichydrogenation of α-acetamido- and α-benzamido-cinnamic acid, citraconic acid, 2-phenyl-1-butene. In the hydrogenation
The combination of four enantiomerically pure organic tectons composed of a rigid chiral backbone bearing two terminal pyridyl coordinating sites with ZnSiF6 behaving as an infinite pillar leads to the formation of tubular 2-D enantiomerically pure helical channels with controlled size and orientation.
Antiviral agents. 2. Structure-activity relations of compounds related to 1-adamantanamine
作者:Paul E. Aldrich、Edward C. Hermann、Walter E. Meier、Marvin Paulshock、William W. Prichard、Jack Austin Synder、John C. Watts
DOI:10.1021/jm00288a019
日期:1971.6
The synthesis of tetradentate salens derived from (3R,4R)-N-substituted-3,4-diaminopyrrolidines and their application in the enantioselective trimethylsilylcyanation of aromatic aldehydes
The in situ formed Ti(IV) complexes of pyrrolidine-based chiral salen ligands derived from natural L-tartaric acid were evaluated as catalysts in the enantioselective trimethylsilylcyanation of aromatic aldehydes. The different activity and selectivity of the catalysts in the formation of the products were found to be dependent on the N-substituent of the pyrrolidine. (C) 2013 Elsevier Ltd. All rights reserved.