Microwave-Assisted Palladium(0)-Catalyzed Alkylative Cyclization of Allenyl Aldehydes Leading to 3-Substituted 3-Cycloalken-1-ols
作者:Hirokazu Tsukamoto、Tomotaka Matsumoto、Yoshinori Kondo
DOI:10.1021/ja076080p
日期:2008.1.1
3-cyclohexenols and -cyclopentenol based on Pd0-catalyzed alkylative, arylative, alkenylative, alkynylative, and borative cyclization reaction of allene−carbonyl compounds. Microwave irradiation increases not only the reaction rate but also the product yield by suppressing formation of hydroarylation byproducts observed in the same catalytic system. Cyclization of optically active 1,3-disubstituted allene aldehyde
我们开发了一种基于 PdO 催化的丙二烯-羰基化合物的烷基化、芳基化、烯基化、炔基化和硼酸化环化反应的 3-取代 3-环己烯醇和 -环戊烯醇的有效合成方法。微波辐射通过抑制在同一催化体系中观察到的加氢芳基化副产物的形成,不仅提高了反应速率,而且提高了产物产率。旋光性 1,3-二取代丙二烯醛的环化表明该反应不是通过碳钯化反应进行的,而是通过“反瓦克”型氧化加成反应进行的。