Isoquinoline-based diimine ligands for Cu(II)-catalyzed enantioselective nitroaldol (Henry) reactions
作者:Michael J. Rodig、Hwimin Seo、Dimitri Hirsch-Weil、Khalil A. Abboud、Sukwon Hong
DOI:10.1016/j.tetasy.2011.05.018
日期:2011.5
A series of isoquinoline-based chiral diimine ligands are conveniently prepared via Bischler–Napieralski cyclization. The C2-symmetric diimine ligand 1a is effective in Cu(II)-catalyzedenantioselectiveHenryreactions between nitromethane and various aldehydes (11 examples), showing 50–89% yield and 75–93% ee.