Applications of α-alkoxyorganocuprate reagents in the regiospecific synthesis of cyclic homoaldol products
作者:Russell J. Linderman、Alex Godfrey、Kelly Horne
DOI:10.1016/0040-4020(89)80077-8
日期:1989.1
Cyclic homoaldol products have been prepared viaconjugateaddition of α-alkoxyorganocuprate reagents to enones. The reactions are regiospecific, providing the homoaldol products in good to excellent yields. The preparation of the cuprates from the α-alkoxyorganostannane precursor is described in detail. Best results were obtained with the higher order cyano cuprate reagent using in-situ trimethylsilyl
Enantioselective Reactions of Scalemic Acyclic α-(Alkoxy)alkyl- and α-(<i>N</i>-carbamoyl)alkylcuprates
作者:R. Karl Dieter、Rhett T. Watson、Rajesh Goswami
DOI:10.1021/ol036237s
日期:2004.1.1
[reaction: see text] Scalemic acyclic alpha-(alkoxy)alkyl- and alpha-(N-carbamoyl)alkylcuprates prepared from organostannanes via organolithium reagents react with vinyl iodides, propargyl mesylates, and alpha,beta-enones to afford coupled products with enantioselectivities ranging from 0 to 99% ee depending upon cuprate reagent, substrate structure, solvent, and temperature. In general, lithium cuprates