ENANTIOSELECTIVE PROTONATION OF A SIMPLE ENOL - AMINOALCOHOL-CATALYZED KETONIZATION OF A PHOTOCHEMICALLY PRODUCED 2-METHYLINDEN-3-OL

被引:48
作者
HENIN, F [1 ]
MUZART, J [1 ]
PETE, JP [1 ]
MBOUNGOUMPASSI, A [1 ]
RAU, H [1 ]
机构
[1] UNIV HOHENHEIM,FACHGEBIET PHYS CHEM,W-7000 STUTTGART 70,GERMANY
来源
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1991年 / 30卷 / 04期
关键词
D O I
10.1002/anie.199104161
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The enol 2, produced by a Norrish type II photoelimination from 1, is protonated enantioselectively to ketone 3 in the presence of (-)-ephedrine. Best optical yields are obtained at 0-degrees-C using small amounts of the chiral aminoalcohol. There is still wide scope for optimization.
引用
收藏
页码:416 / 418
页数:3
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