Noncovalent Substrate-Directed Enantioselective Heck Reactions: Synthesis of S- and P-Stereogenic Heterocycles
作者:Francisco de Azambuja、Rafaela C. Carmona、Tomaz H. D. Chorro、Gabriel Heerdt、Carlos Roque D. Correia
DOI:10.1002/chem.201602572
日期:2016.8.1
S‐ and P‐Stereogenic heterocycles were synthesized by a remarkably simple enantioselective Heck desymmetrization reaction based on the unprecedented noncovalent directing effect of S=O and P=O functionalities. Selected prochiral symmetric substrates were efficiently arylated using the recently disclosed chiral PyraBOx ligand under mild and open‐flask reaction conditions. Several five‐membered aryl‐