o-Triisopropylsiloxyaryl ketones and aldehydes smoothly reacted with the lithium salt of trimethylsilyldiazomethane to give o-triisopropylsiloxyphenylacetylenes which were easily converted to benzofurans by treatment with tetra-n-butylammonium fluoride. 3-Benzofuranmethanols were also obtained when the reaction was conducted in the presence of carbonyl compounds.
邻
三异丙基硅氧芳基酮和醛与三甲基
硅基二氮杂
环丁烷的
锂盐顺利反应,生成邻
三异丙基硅氧
苯乙炔,经四正丁基
氟化铵处理后很容易转化为
苯并呋喃。在有羰基化合物存在的情况下进行反应,还可以得到 3-
苯并呋喃甲醇。