Specific Generation of Lithiated 3-Trimethylsiloxy-1,2-propadiene Derivatives from 1-(Trimethylsilyl)propargyl Alcohols
作者:Masahiro Kato、Isao Kuwajima
DOI:10.1246/bcsj.57.827
日期:1984.3
1-(Trimethylsilyl)propargyl alcohols have been prepared by treating acyltrimethylsilanes with magnesium acetylides, and their base-induced reactions involving rearrangement of silyl group have been examined. Treatment of the alcohol with an equimolar amount of butyllithium in hexane followed by addition of tetrahydrofuran has allowed to generate the lithiated 3-trimethylsiloxy-1,2-propadiene, which reacts with an alkyl iodide to afford the alkylated 1-trimethylsiloxy-1,2-propadiene in high yield. Further, a catalytic amount of butyllithium also effects an efficient conversion of the alcohol to the corresponding 1-siloxy-1,2-propadiene through a similar rearrangement process.
通过用乙酰化镁处理酰基三甲基硅烷,制备出了 1-(三甲基硅基)丙炔醇,并对其涉及硅基重排的碱诱导反应进行了研究。用等摩尔量的丁基锂在己烷中处理醇类,然后加入四氢呋喃,可以生成石碳酸化的 3-三甲基硅氧基-1,2-丙二烯,它与烷基碘化物反应,可以高产率地得到烷基化的 1-三甲基硅氧基-1,2-丙二烯。此外,催化量的丁基锂也能通过类似的重排过程将醇高效地转化为相应的 1-硅氧基-1,2-丙二烯。