Hydrogen-Bond-Directed Highly Stereoselective Synthesis of Z-Enamides via Pd-Catalyzed Oxidative Amidation of Conjugated Olefins
作者:Ji Min Lee、Doo-Sik Ahn、Doo Young Jung、Junseung Lee、Youngkyu Do、Sang Kyu Kim、Sukbok Chang
DOI:10.1021/ja0639315
日期:2006.10.1
amidation reaction has a broad substrate scope, allowing alkyl, aryl, and vinyl amides to react with olefins conjugated with ester, amide, phosphonate, and ketone groups. The notable preference for the formation of Z-enamides is presumably due to the presence of an intramolecular hydrogen bond between the amido proton and the carbonyl oxygen. The energy difference between two plausible sigma-alkylamidopalladium