The dimerisation of monosubstituted α-hydroxyacetylenes by use of tris(triphenylphosphine)chlororhodium(<scp>I</scp>) as catalyst
作者:H. Singer、G. Wilkinson
DOI:10.1039/j19680000849
日期:——
It has been shown that catalytic amounts of tris(triphenylphosphine)chlororhodium(I), RhCl(PPh3)3, in benzene, dichloromethane, or chloroform solution will convert monosubstituted α-hydroxyacetylenes predominantly into the dimers. In this way 3-methylbut-1-yn-3-ol yields 2,7-dimethyloct-3-en-5-yne-2,7-diol; by analogy dimers were obtained from 3-methylpent-1-yn-3-ol, but-1-yn-3-ol, and 1-ethynylcyclohexan-1-ol
已经显示在苯,二氯甲烷或氯仿溶液中催化量的三(三苯基膦)氯铑(I),RhCl(PPh 3)3将主要将单取代的α-羟基乙炔转化为二聚体。以这种方式3-甲基丁-1-yn-3-醇产生2,7-二甲基辛-3-烯-5-炔-2,7-二醇;通过类推,由3-甲基戊-1-yn-3-ol,but-1-yn-3-ol和1-乙炔基环己-1-醇得到二聚体。尽管苯乙炔可产生一些1,4-二苯丁烯,但它也可产生更高的聚合物。等量的甲基丁炔醇和苯乙炔形成混合物,可以从中分离出5-甲基-1-苯基己x-3-en-1-yn-5-ol。