[EN] CYCLOPROPENIMINE CATALYST COMPOSITIONS AND PROCESSES<br/>[FR] COMPOSITIONS CATALYTIQUES À BASE DE CYCLOPROPÉNIMINE ET PROCÉDÉS
申请人:UNIV COLUMBIA
公开号:WO2013059118A1
公开(公告)日:2013-04-25
The present invention provides, inter alia, a cyclopropenimine Brønsted base catalyst and a cyclopropenimine scaffold for use as a Brønsted base catalyst. This cyclopropenimine has the structure (100). Methods for making such a cyclopropenimine are also provided. Further provided are processes for carrying out an organic synthetic reaction and processes for catalyzing a proton transfer reaction enantioselectively using such a cyclopropenimine Brønsted base catalyst.
Quaternaryammoniumsalts derived from amino acids with large steric hindrance group have been designed and synthesized, which promoted the asymmetric Mannich reaction of glycine imines with N-Boc-aldimines in excellent yields with high enantio- and diastereo-control compared with known catalysts of this type reported by our group.
CYCLOPROPENIMINE CATALYST COMPOSITIONS AND PROCESSES
申请人:THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
公开号:US20140288323A1
公开(公告)日:2014-09-25
The present invention provides, inter alia, a cyclopropenimine Brønsted base catalyst and a cyclopropenimine scaffold for use as a Brønsted base catalyst. This cyclopropenimine has the structure (100). Methods for making such a cyclopropenimine are also provided. Further provided are processes for carrying out an organic synthetic reaction and processes for catalyzing a proton transfer reaction enantioselectively using such a cyclopropenimine Brønsted base catalyst.