Catalyst development for organocatalytic hydrosilylation of aromatic ketones and ketimines
作者:Andrei V. Malkov、Angus J. P. Stewart-Liddon、Grant D. McGeoch、Pedro Ramírez-López、Pavel Kočovský
DOI:10.1039/c2ob25472g
日期:——
A new family of Lewis basic 2-pyridyl oxazolines have been developed, which can act as efficientorganocatalysts for the enantioselective reduction of prochiral aromatic ketones and ketimines with trichlorosilane, a readilyavailable and inexpensive reagent. 1-Isoquinolyl oxazoline, derived from mandelic acid, was identified as the most efficient catalyst of the series, capable of delivering high
Fluorescence-Based Screening of Asymmetric Acylation Catalysts through Parallel Enantiomer Analysis. Identification of a Catalyst for Tertiary Alcohol Resolution
作者:Elizabeth R. Jarvo、Catherine A. Evans、Gregory T. Copeland、Scott J. Miller
DOI:10.1021/jo015803z
日期:2001.8.1
A technique for high-throughput screening of kinetic resolution catalysts is reported. The method relies on carrying simultaneous kinetic resolutions in a multiwell plate format wherein each well contains a unique catalyst and a small amount of a pH-activated fluorescent sensor (3). By conducting experiments such that each catalyst is evaluated in parallel in the presence of each isolated enantiomer