Highly Stereoselective Synthesis of Terminal Chloro-Substituted Propargylamines and Further Functionalization
作者:Savannah Jordan、Samuel A. Starks、Michael F. Whatley、Mark Turlington
DOI:10.1021/acs.orglett.5b02408
日期:2015.10.2
stereoselective addition of lithiated chloroacetylene, derived in situ from cis-1,2-dichloroethene and methyl lithium, to Ellman chiral N-tert-butanesulfinyl imines is reported. The reaction proceeds in high yield (up to 98%) and with excellent diastereoselectivity (up to >20:1) for a variety of aryl, heteroaromatic, alkyl, and α,β-unsaturated imine substrates. Transformations of the terminal chloro-substituted