A new route for the synthesis of amphiphilic and water-soluble ligands: mono- and di-tertiary phosphines having an alkylene sulfate chain

Abstract

Cyclic sulfates react with LiPPh₂ to form a series of new amphiphilic or water-soluble ligands: monotertiary phosphines with one or two alkylene sulfate chains and ditertiary phosphines with one or two hydrophilic tails attached to bridgehead carbon atom; the application of zwitterionic Rh^I complexes (sulfatephos)₂Rh(cod) and (sulfatediphos)Rh(cod) in liquid biphasic catalysis has been demonstrated for the hydroformylation of styrene and oct-1-ene.