Uncatalyzed conjugate additions of diorganozincs in N-methylpyrrolidinone
摘要:
Diorganozincs efficiently add to enones, unsaturated nitriles and nitroolefins in a mixture of THF and NMP furnishing the corresponding Michael adducts in good to excellent yields. Copyright (C) 1996 Elsevier Science Ltd
Preparation of functionalized dialkylzinc reagents via an iodine-zinc exchange reaction. Highly enantioselective synthesis of functionalized secondary alcohols
作者:Michael J. Rozema、AchyuthaRao Sidduri、Paul Knochel
DOI:10.1021/jo00033a008
日期:1992.3
Functionalized dialkylzincs are obtained by the reaction of polyfunctional alkyl iodides with Et2Zn in excellent yield. Their treatment with aldehydes, in the presence of the titanium catalyst 6, affords functionalized secondary alcohols with high enantioselectivity.