Decarboxylative and dehydrative coupling of dienoic acids and pentadienyl alcohols to form 1,3,6,8-tetraenes
作者:Ghina’a I Abu Deiab、Mohammed H Al-Huniti、I F Dempsey Hyatt、Emma E Nagy、Kristen E Gettys、Sommayah S Sayed、Christine M Joliat、Paige E Daniel、Rupa M Vummalaneni、Andrew T Morehead、Andrew L Sargent、Mitchell P Croatt
DOI:10.3762/bjoc.13.41
日期:——
Dienoic acids and pentadienyl alcohols are coupled in a decarboxylative and dehydrative manner at ambient temperature using Pd(0) catalysis to generate 1,3,6,8-tetraenes. Contrary to related decarboxylative coupling reactions, an anion-stabilizing group is not required adjacent to the carboxyl group. Of mechanistic importance, it appears that both the diene of the acid and the diene of the alcohol
二烯酸和戊二烯基醇在环境温度下使用Pd(0)催化以脱羧和脱水方式偶联,生成1,3,6,8-四烯。与相关的脱羧偶联反应相反,在羧基附近不需要阴离子稳定基团。在机理上很重要,似乎该反应既需要酸的二烯,又需要醇的二烯。为了进一步理解该反应,研究了两个偶联配偶体每个唯一位置的取代,并提出了两种潜在的机理。