Ruthenium-catalyzed selective anti-Markovnikov trans addition of carboxylic acids and tail-to-tail dimerization of terminal alkynes
作者:Karen Melis、Pawel Samulkiewicz、Jacek Rynkowski、Francis Verpoort
DOI:10.1016/s0040-4039(02)00366-0
日期:2002.4
Carboxylic acids react with terminal alkynes in the presence of a catalytic amount of RuClx(p-cymene)(triazol-5-ylidene) to selective generate Z-alk-1-en-1-yl esters. The anti-Markovnikov and trans addition on the terminal alkyne gives access to Z-alkene derivatives of phenylacetylene, t-butylacetylene, 1-octyne, 4-pentynoic acid and 1,7-octadiyne. The dimerization of terminal alkynes catalyzed with the same
羧酸在催化量的RuCl x(对-异丙基)(三唑-5-亚烷基)的存在下与末端炔烃反应,以选择性生成Z -alk-1-en-1-yl酯。在末端炔烃上的反马尔科夫尼科夫和反式加成反应可以得到苯乙炔,叔丁基乙炔,1-辛炔,4-戊酸和1,7-辛二炔的Z-烯烃衍生物。用相同的Ru-络合物催化的末端炔烃的二聚化优先产生尾-尾偶联反应。