Reactions of 2-Chloroacyltrimethylsilanes with Grignard Reagents. Preparation of 3-(Trimethylsilyl)-2-alkanones and 2-(Trimethylsilyl)-1-alkanols
作者:Toshio Sato、Kazuhisa Matsumoto、Toru Abe、Isao Kuwajima
DOI:10.1246/bcsj.57.2167
日期:1984.8
Reactions of 2-chloroacyltrimethylsilanes with Grignard reagents have been examined. Thus, treatment with methylmagnesium iodide affords the corresponding 3-(trimethylsilyl)-2-alkanones through an initial addition followed by removal of chloride anion and 1,2-rearrangement of silyl group. In contrast, the reaction proceeds with 2 equiv of the Grignard reagents bearing β-hydrogen to give 2-(trimethylsilyl)-1-alkanols
已经研究了 2-氯酰基三甲基硅烷与格氏试剂的反应。因此,用甲基碘化镁处理通过初始添加、随后去除氯阴离子和甲硅烷基的 1,2-重排得到相应的 3-(三甲基甲硅烷基)-2-烷酮。相比之下,反应用 2 当量的带有 β-氢的格利雅试剂进行,得到 2-(三甲基甲硅烷基)-1-烷醇,其中甲硅烷基羰基的初始还原,然后是这种重排,并将格利雅试剂加入到所得的 2 -(三甲基甲硅烷基)链烷醛已被提出。