On the effct of dibenzophosphole on the catalytic activity of rhodium phosphine complexes

Add time:08/15/2019    Source:sciencedirect.com

A kinetic examination of the influence of phenyldibenzophosphole (DBF) on the catalytic activity of hydridotetrakis(triphenylphosphine)-rhodium(I) (HRh(PPh3)4) and of hydridocarbonyltris(triphenylphosphine)-rhodium(I) (HRh(CO)(PPh3)3) has been undertaken. The rate of hex-1-ene hydrogenation is increased significantly upon DBP addition when HRh(PPh3)4 is the catalyst precursor, but with HRh(CO)(PPh3)3 a pronounced deactivating effect of DBP is observed. This ‘selective poisoning’ of the carbonyl complex is ascribed to the inability of the monocarbonyl DBP complex to coordinate olefins.

We also recommend Trading Suppliers and Manufacturers of Hydridotetrakis(triphenylphosphine)rhodium(I) (cas 18284-36-1). Pls Click Website Link as below: cas 18284-36-1 suppliers

Prev:New aspects of the transfer hydrogenation of α,β-unsaturated ketones by alcohols in the presence of hydridotetrakis(triphenylphosphine)-rhodium(I): Part I: kinetic and infrared studies
Next:Comparative chemistry of η3-oxaallyl and η3-allyl rhodium(I) complexes in the hydrosilylation of cyclopropyl ketones: observation of an unprecedented rearrangement)