A new chiral phosphine-phosphite and two strictly related disphosphites have been synthesised and tested in the asymmetric hydroformylation of styrene. The catalyc efficiency of the phosphine-phosphite appears distincly higher than that of the two disphosphites; in a particular, it furnishes 2-phenylpropanal with very high regioselectivity and enantioselecyvity up to 40%.
Synthesis of new chiral phosphine–phosphites and diphosphites and their application in asymmetric hydroformylation
BEGHETTO, Valentina;SCRIVANTI, Alberto;MATTEOLI, Ugo
2001-01-01
Abstract
A new chiral phosphine-phosphite and two strictly related disphosphites have been synthesised and tested in the asymmetric hydroformylation of styrene. The catalyc efficiency of the phosphine-phosphite appears distincly higher than that of the two disphosphites; in a particular, it furnishes 2-phenylpropanal with very high regioselectivity and enantioselecyvity up to 40%.
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