Platinum Complexes of Five- and Six-Membered P-Heterocycles as Potential Catalysts

Gyorgy      Keglevich; Laszlo      Kollar

doi:10.2174/157017810793811713

Abstract

5- and 6-Membered P-heterocycles including phosphines (1H-phospholes, 3-phospholenes, phospholanes, dihydro- and tetrahydrophosphinines), phosphinites (dibenzo[c.e][1,2]oxaphosphorines) and phosphonites (benzo[1,3,2]dioxaphospholanes), as well as, 3-P-substituted species 3-diphenylphosphino-1,2,3,6-tetrahydrophosphinine or 1,2,3,4,5,6-hexahydrophosphinine derivatives are surveyed as potential monodentate and bidentate P(III)-ligands in platinum(II)-complexes. The cis structures were assigned on the basis of stereospecific 1J(31P-195Pt) NMR coupling constants. The catalytic effect of selected Pt(II)-complexes in hydroformylation is also summarized.

Keywords: P-heterocycles, cyclic phosphines, benzodioxa[1,3,2]phospholanes, dibenzo[c.e][1,2]oxaphosphorines, Ptcomplexes, Catalysts, Transition metal complexes, McCormack cycloaddition, deoxygenation, pyridine, tartaric acid, TADDOL, NMR, cis-PtP2Cl2, P-Ligands, cis, trans, C2, –, C4, PtCl2(PhCN)2, temperature, crystalline, P-cycloalkoxy, diastereomers, Complexation, heterochiral, isomers, chromatography, hydroformylation, styrene, regioselectivities, aldehyde, P-substituents, oxaphosphorine ring