Diverse Alkanones by Catalytic Carbon Insertion into the Formyl C−H Bond. Concise Access to the Natural Precursor of Achyrofuran
作者:Andrew J. Wommack、David C. Moebius、Austin L. Travis、Jason S. Kingsbury
DOI:10.1021/ol9010932
日期:2009.8.6
Over a century ago, the first reactions of diazomethane with aldehydes delivered methyl ketones. In the interim, aldehydes have been homologated with trimethylsilyldiazomethane, diazoacetates, and aryldiazomethanes, on rare occasion with catalysis. This work describes a mild procedure for convergent ketone assembly from nonstabilized diazoalkanes, including examples of chiral ketone synthesis with
一个多世纪前,重氮甲烷与醛的首次反应生成了甲基酮。在此期间,醛很少与三甲基甲硅烷基重氮甲烷,重氮乙酸酯和芳基重氮甲烷发生同系化反应。这项工作描述了一种由不稳定的重氮烷烃聚合酮组装的温和方法,包括使用双取代(内部)亲核试剂进行手性酮合成的实例。该方法对空间拥挤具有显着的耐受性,这是通过对复杂的二苯并呋喃呋喃呋喃进行的简单处理得到证实的。