Substituted acetylenic carbinols such as (2), (5), and (6) are obtained from the reaction of carbonyl compounds with the potassium or lithium salts of trimethylsilyacetylenes; these are prepared either by the in situ cleavage of bis(trimethylsilyl)acetylenes with 1–10 mol% KF–18-crown-6 ether or by the quantitative monodesilylation of bis-silylacetylenes with MeLiLiBr complex.
取代的炔属
甲醇,如(2),(5)和(6),是从羰基化合物与三甲基甲炔基的
钾盐或
锂盐反应得到的。这些可以通过用1–10 mol%KF-18皇冠6醚原位裂解双(三甲基甲
硅烷基)
乙炔或通过将双甲
硅烷基
乙炔与MeLiLiBr配合物定量单甲
硅烷基化来制备。