Richard Lewin Wife

Platinum hydroformylation catalysts containing diphenylphosphine oxide ligands

Platinum complexes of the general formula Pt(H)(Ph2PO)(Ph2POH)(PPh3)(1a) catalyse the hydroformylation of hept-1-ene and, more significantly, hept-2-ene, yielding products of high linearity (90 and 60%, respectively); the intermediate alkyl and acyl complexes (1c–e) which most often escape direct observation in a catalytic system, have been successfully isolated and identified.

The reaction of the diarylphosphine oxide anion with oxiranes: a new synthesis of 1,2-ethylenebis(diarylphosphine oxides)

In an unusual double-substitution reaction, the diarylphosphine oxide anion reacts with oxiranes to give bis(phosphine oxides) that can have functional groups on the aryl ring and/or the bridging carbons between the PO groups.

The Reaction of the Diarylphosphine Oxide Anion with Oxiranes: A New Synthesis for 1,2-Ethanobis(Diaryl)Phosphines

Abstract The reaction of the diarylphosphine oxide anion with oxiranes gives bis-phosphine oxides in what is formally a double-substitution reaction but one which proceeds via a retro-aldol fragmentation and recombination process.