A high yielding one-pot method for the preparation of salen ligands
作者:Trond Vidar Hansen、Lars Skattebøl
DOI:10.1016/j.tetlet.2005.03.193
日期:2005.5
Phenols are converted to salicylaldehydes with paraformaldehyde, MgCl2-Et3N in THF, and subsequently treated with (+)-(R,R)-1,2-diammoniumcyclohexane mono-(+)-tartrate salt affording the corresponding salen ligands in high yields. The reactions are conveniently carried out as a one-pot procedure. © 2005 Elsevier Ltd. All rights reserved.