A process for the manufacture of an acetylenically unsaturated alcohol comprising reacting formaldehyde, an aldehyde or a ketone (a carbonyl compound) with acetylene in the presence of ammonia and an alkali metal hydroxide, the molar ratio of the alkali metal hydroxide to the carbonyl compound being less than 1 : 200. The reaction products, which depending on the starting carbonyl compound are propargyl alcohol or 1-monosubstituted or 1,1-disubstituted derivatives thereof, are of use as intermediates in the synthesis of many useful end products, inter alia in the field of vitamins and carotenoids.
一种制备炔基不饱和醇的工艺,包括在
氨和碱
金属氢氧化物的存在下,将
甲醛、醛或酮(羰基化合物)与
乙炔反应,碱
金属氢氧化物与羰基化合物的摩尔比小于1:200。根据起始羰基化合物的不同,反应产物可以是
丙炔醇或其1-单取代或1,1-二取代衍
生物,这些产物在合成许多有用终端产品中起中间体作用,其中包括
维生素和类
胡萝卜素领域。