作者:Steven J. Coote、Stephen G. Davies、Ai M. Fletcher、Paul M. Roberts、James E. Thomson
DOI:10.1002/asia.200900470
日期:2010.3.1
pseudoephedrine or ephedrine) give the corresponding trans‐N(2),3‐dimethyl‐4‐phenyl‐1,2,3,4‐tetrahydroisoquinolines with high levels of diastereoselectivity and in good yields of isolated product. The cyclizations of the corresponding chromiumtricarbonylcomplexes are rendered completely stereoselective. Acid‐promoted cyclization of N‐(3′,4′‐dimethoxybenzyl)ephedrine and itschromiumtricarbonylcomplex occur