Investigating the Nature of Palladium Chain-Walking in the Enantioselective Redox-Relay Heck Reaction of Alkenyl Alcohols
作者:Margaret J. Hilton、Li-Ping Xu、Per-Ola Norrby、Yun-Dong Wu、Olaf Wiest、Matthew S. Sigman
DOI:10.1021/jo501813d
日期:2014.12.19
The mechanism of the redox-relay Heck reaction was investigated using deuterium-labeled substrates. Results support a pathway through a low energy palladium–alkyl intermediate that immediately precedes product formation, ruling out a tautomerization mechanism. DFT calculations of the relevant transition structures at the M06/LAN2DZ+f/6-31+G* level of theory show that the former pathway is favored by