Highly Enantioselective Synthesis of Arylaliphatic Tertiary Alcohols using Mutants of an Esterase fromBacillus subtilis
作者:Robert Kourist、Sebastian Bartsch、Uwe T. Bornscheuer
DOI:10.1002/adsc.200600641
日期:2007.6.4
kinetic resolution of a series of acetates of arylaliphatictertiaryalcohols was studied using recombinant esterase variants from Bacillus subtilis (BS2) expressed in E. coli. Highest enantioselectivities (E>100) were achieved in the synthesis of 1,1,1-trifluoro-2-phenylbut-3-yn-2-ol and three para-substituted analogues using BS2 mutant G105A. With mutant E188D only two compounds were converted with
transition metal‐catalyzedenantioselective propargylic substitution reactions has gained much progress in recent years, however, no successful example with phosphorus‐centered nucleophiles has yet been reported until now. Herein, we report the first successful example of ruthenium‐catalyzedenantioselective propargylic substitution reactions of propargylic alcohols with diarylphosphine oxides as phosphorus‐centered