On the Stereochemical Divergence in the Conjugate Addition of Lithium Dimethylcuprate/Trimethylsilyl Chloride to γ-Alkoxy and γ-Ureido α,β-Unsaturated Esters
作者:Stephen Hanessian、Kenzo Sumi
DOI:10.1055/s-1991-28396
日期:——
A comparative study was made of the reaction of chiral non-racemic γ-alkoxy and γ-ureido-α,β-unsaturated esters with lithium dimethylcuprate in the presence of trimethylsilyl chloride. The possible origins of the anti- and syn-additions respectively are discussed and rationalized.
在三甲基氯硅烷存在下,对手性非气相δ-烷氧基和δ-脲基δ,δ-不饱和酯与二甲基杯酸锂的反应进行了比较研究。分别讨论了反加成和合成加成的可能起源,并使之合理化。