Stereoselective Preparation of Functionalized Acyclic Alkenylmagnesium Reagents Using <i>i-</i>PrMgCl·LiCl
作者:Hongjun Ren、Arkady Krasovskiy、Paul Knochel
DOI:10.1021/ol048363h
日期:2004.11.1
Functional groups such as a nitrile, chloride, iodide, and ester are readily tolerated. The conversion of an alkenyl iodide bearing a keto group to the corresponding silylated cyanohydrin allows preparation of the corresponding Grignard reagent affording, after acylation and deprotection, unsaturated 1,4-diketones.
通过在-40至-20摄氏度之间与i-PrMgCl.LiCl反应,无环官能化的烯基碘化物可以以高的立体选择性转化为相应的官能化的烯基镁衍生物。容易容忍诸如腈,氯,碘化物和酯等官能团。带有酮基的烯基碘化物的转化为相应的甲硅烷基化的氰醇,可以制备相应的格氏试剂,在酰化和脱保护后提供不饱和的1,4-二酮。