Metal catalysis in organic reactions. Part 13. The reaction of 3-en-1-ynes with trialkylalanes: influence of transition-metal complexes
作者:Anna Maria Caporusso、Giampaolo Giacomelli、Luciano Lardicci
DOI:10.1039/p19810001900
日期:——
The reaction between trialkylalanes and 3-alkyl-, 4-alkyl-, or 3,4-dialkyl-but-3-en-1-ynes (1) leads to products which correspond to metallation, reduction, and carbalumination processes. The extent of such reactions, and the regio- and stereo-selectivity of the carbalumination, are dependent on the enyne used. A mechanism is proposed involving tautomeric equilibria among several α-unsaturated organoaluminum
三烷基丙氨酸与3-烷基-,4-烷基-或3,4-二烷基-丁-3-烯-1-炔(1)之间的反应产生对应于金属化,还原和碳铝化过程的产物。这种反应的程度以及碳氨化的区域选择性和立体选择性取决于所用的烯炔。提出了一种机制,涉及几种α-不饱和有机铝中间体之间的互变异构体平衡,以解释碳酰化产物的形成。