Novel amphiphilic diphosphines: synthesis, rhodium complexes, use in hydroformylation and rhodium recycling
作者:Armin Buhling、Jaap W. Elgersma、Steve Nkrumah、Paul C. J. Kamer、Piet W. N. M. van Leeuwen
DOI:10.1039/dt9960002143
日期:——
to 51 : 1) were found with 6–8% of isomerised octenes. The diphosphines L1–L3 gave rhodiumcatalysts up to twice as active as those derived from 2,2′-bis(diphenylphosphinomethyl)-1,1′-biphenyl (bisbi). The rate of hydroformylation using L1–L4 was first order and approximately first order respectively in the rhodium and oct-1-ene concentration; the order in CO pressure was negative and that in H2 pressure