Palladium-Catalyzed C−H Activation/Intramolecular Amination Reaction: A New Route to 3-Aryl/Alkylindazoles
作者:Kiyofumi Inamoto、Tadataka Saito、Mika Katsuno、Takao Sakamoto、Kou Hiroya
DOI:10.1021/ol0711117
日期:2007.7.1
A method for the catalytic C-H activation of hydrazone compounds followed by intramolecular amination is described. It requires the use of a catalytic amount of Pd(OAc)2 in the presence of Cu(OAc)2 and AgOCOCF3, which efficiently effects the cyclization to afford variously substituted indazoles. The reactions proceed under relatively mild conditions and thus tolerate a variety of functional groups
描述了for化合物的催化CH活化然后进行分子内胺化的方法。它需要在Cu(OAc)2和AgOCOCF3存在下使用催化量的Pd(OAc)2,这有效地实现了环化反应,从而提供了各种取代的吲唑。反应在相对温和的条件下进行,因此可以耐受各种官能团,包括烷氧羰基和氰基以及卤素原子。