New chiral phosphine–phosphites: a convenient synthesis based on the demethylation of o-anisyl phosphines and application in highly enantioselective catalytic hydrogenations
作者:Andrés Suárez、Antonio Pizzano
DOI:10.1016/s0957-4166(01)00464-5
日期:2001.10
An easy demethylation of o-anisyl phosphines provides a convenient access to a series of new chiral phosphine-phosphites. The screening of these derivatives as ligands in rhodium-catalyzed asymmetric hydrogenation of dimethyl itaconate has shown a profound influence of ligand structure on the enantioselectivity of the process. (C) 2001 Elsevier Science Ltd. All rights reserved.