β-Hydroxysulfoximines in the catalyzed enantioselective reduction of ketones with borane
摘要:
Optically active beta-hydroxysulfoximines catalyze the asymmetric borane reduction of ketones affording secondary alcohols in high yields with good enantioselectivities (up to 93% ee).
JOHNSON C. R.; LOCKARD J. P.; KENNEDY E. R., J. ORG. CHEM., 1980, 45, NO 2, 264-271
作者:JOHNSON C. R.、 LOCKARD J. P.、 KENNEDY E. R.
DOI:——
日期:——
Application of β-Hydroxysulfoximines in Catalytic Asymmetric Phenyl Transfer Reactions for the Synthesis of Diarylmethanols
作者:Jörg Sedelmeier、Carsten Bolm
DOI:10.1021/jo7016718
日期:2007.11.1
Enantiomerically enriched diarylmethanols have been prepared by catalyzed asymmetric phenyl transfer reactions onto aromatic aldehydes with use of readily available β-hydroxysulfoximines as catalysts. As the aryl source, combinations of diethylzinc with either diphenylzinc or triphenylborane have been applied affording arylphenylmethanols with up to 93% ee in good yields. Various functionalized aldehydes