Palladium-Catalyzed, <i>N</i>-(2-Aminophenyl)acetamide-Assisted <i>Ortho</i>-Arylation of Substituted Benzamides: Application to the Synthesis of Urolithins B, M6, and M7
作者:M. Damoder Reddy、Alexandra N. Blanton、E. Blake Watkins
DOI:10.1021/acs.joc.7b00256
日期:2017.5.19
N-(2-aminophenyl)acetamide as a novel directing group, Mn(OAc)2 as a co-oxidant (silver free reaction conditions), and absolute ortho-monoaryl selectivity are notable features of this reaction. In addition, the obtained monoarylated products could be further transformed into the bioactive natural products and human microflora metabolites of dietary ellagic acid derivatives, urolithin B, urolithin M6, and
Pd催化的,选择性的,单芳基化的邻位用芳基/杂芳基碘化物各种苯甲酰胺的-C-H键已经使用实现ñ - (2-氨基苯基)乙酰胺(APA),其为新的二齿引导组首次。该反应可耐受各种官能团,并且以良好至中等的产率成功制备了各种联芳酰胺衍生物。利用N-(2-氨基苯基)乙酰胺作为新型导向基团,Mn(OAc)2作为助氧化剂(无银反应条件)和绝对邻位-单芳基选择性是该反应的显着特征。另外,获得的单芳基化产物可以进一步转化为膳食鞣花酸衍生物,尿石素B,尿石素M6和尿石素M7的生物活性天然产物和人类微生物区系代谢物。