Palladium-Catalyzed Amination of 2,3-Dichloro-1,4-naphthoquinone with Nitroarylamines
作者:John Reiner、Xiao-Lei Wang、Xiu-Fang Zheng
DOI:10.1055/s-2006-939047
日期:——
A convenient one-step synthesis of 2-[(nitroaryl)amino]-3-chloro-1,4-naphthoquinones is reported. The direct amination of 2,3-dichloro-1,4-naphthoquinone with nitro-substituted aryl amines is catalyzed by PdCl 2 (dppf)/dppf 1 in the presence of t-BuONa as base to yield 2-[(nitroaryl)amino]-3-chloro-1,4-naphthoquinones, several of which were previously unavailable. Traces of the 2,3-di[(nitroaryl)amino]-1
报告了 2-[(硝基芳基) 氨基]-3-氯-1,4-萘醌的方便一步合成。PdCl 2 (dppf)/dppf 1 在 t-BuONa 碱存在下催化 2,3-二氯-1,4-萘醌与硝基取代的芳胺直接胺化,生成 2-[(硝基芳基)氨基]-3-chloro-1,4-naphthoquinones,其中一些以前无法获得。检测到痕量 2,3-二[(硝基芳基)氨基]-1,4-萘醌作为副产物。