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。