An Alternative Procedure for the O-Trimethylsilylation of Enolates Generated by Copper-Catalyzed 1,4-Additions
作者:H. Andringa、I. Oosterveld、L. Brandsma
DOI:10.1080/00397919108021287
日期:1991.6
bromide has been successfully used as an additive instead of hexamethylphosphoric triamide in the O-trimethylsilylation of enolates generated by copper halide-catalyzed reaction of Grignardreagents with a number of α, β-unsaturated carbonyl compounds. Some conjugate additions also proceed satisfactorily in the absence of lithium bromide.