An effective diphosphoramidite rhodium catalyst for selective hydroformylation of 1-octene
2018
Abstract A very efficient and highly selective rhodium catalyst with a C 2 -symmetric BINOL-derived diphosphoramidite ligand for hydroformylation of 1-octene has been developed. At mild conditions (50 °C and 10 bar H 2 /CO) a very active rhodium catalyst has been obtained which produces over 99% of aldehydes with 98.2% n -regioselectivity. The spectroscopic characterization of the hydridorhodium catalytically active species showed that the diphosphoramidite ligand coordinates bis-equatorially in the trigonal bipyramidal rhodium complex, which coupled with its π-acceptor capacity might account for the high catalyst performance.
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