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Formation of a Phosphine−phosphinite Ligand in RhCl(PRR‘₂)[P,P-R‘(R)POCH₂P(CH₂OH)₂] and R‘H from cis-RhCl(PRR‘₂)₂[P(CH₂OH)₃] via P−C Bond Cleavage

Supporting Info

Fabio Lorenzini, Brian O. Patrick, and Brian R. James*

Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1

Inorg. Chem., 2007, 46 (21), pp 8998–9002

DOI: 10.1021/ic7012182

Publication Date (Web): September 15, 2007

To whom correspondence should be addressed. E-mail:brj@chem.ubc.ca.

Abstract

Reaction of RhCl(1,5-cod)(THP), where THP = P(CH₂OH)₃, with several PRR‘₂ phosphines (R = or ≠ R‘) generates, concomitantly with R‘H, the derivatives RhCl(PRR‘₂)[P,P-R‘(R)POCH₂P(CH₂OH)₂] in two isomeric forms. The hydrogen of the hydrocarbon co-product derives from a THP hydroxyl group which becomes an ‘alkoxy' group at the residual PRR‘ moiety, this resulting in the P,P-chelated R‘(R)POCH₂P(CH₂OH)₂ ligand. One of the isomers of the PPh₃ system, cis-RhCl(PPh₃)[P,P-P(Ph)₂OCH₂P(CH₂OH)₂], was structurally characterized (cis refers to the disposition of the P atoms with Ph substituents).