作者:Dong-Hwan Lee、Ki-Hyeok Kwon、Chae S. Yi
DOI:10.1126/science.1208839
日期:2011.9.16
A ruthenium catalyst forms carbon-carbon bonds between olefins and alcohols while liberating only water as a by-product. Alkenes and alcohols are among the most abundant and commonly used organic feedstock in industrial processes. We report a selective catalytic alkylation reaction of alkenes with alcohols that forms a carbon-carbon bond between vinyl carbon-hydrogen (C–H) and carbon-hydroxy centers
钌催化剂在烯烃和醇之间形成碳-碳键,同时仅释放水作为副产物。烯烃和醇是工业过程中最丰富和最常用的有机原料。我们报告了烯烃与醇的选择性催化烷基化反应,该反应在乙烯基碳氢(C-H)和碳-羟基中心之间形成碳-碳键,同时失去水。阳离子钌络合物 [(C6H6)(PCy3)(CO)RuH]+BF4–(Cy,环己基)可在 75°C 至 110°C 的温度范围内在 2 至 8 小时内催化溶液中的烷基化,并耐受广泛的底物官能团,包括胺和羰基。初步的机理研究与醇的 Friedel-Crafts 型亲电活化不一致,