Enantioselective Allylations of Azlactones with Unsymmetrical Acyclic Allyl Esters
作者:Barry M. Trost、Xavier Ariza
DOI:10.1021/ja992754n
日期:1999.11.1
A catalytic asymmetric synthesis of quaternaryamino acids has been developed. The method derives from the asymmetric allylic alkylation (AAA) reaction with chiral palladium catalysts derived from π-allylpalladium chloride dimer and the bis-2-diphenylphosphinobenzamide of R,R-1,2-diaminocyclohexane and related ligands. Highly symmetrical allylating agents such as allyl acetate and 2-methallyl acetate