Synthesis and use of borane and platinum(II) complexes of 3-diphenylphosphino-1- phenylphospholane (LuPhos)

✍ Scribed by K. Michał Pietrusiewicz; Anna Flis; Viktória Ujj; Tamás Körtvélyesi; László Drahos; Péter Pongrácz; László Kollár; György Keglevich

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 254 KB
• Volume: 22
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.20741

✦ Synopsis

Abstract

3‐Diphenylphosphinoyl‐1‐phenylphospholane 1‐oxide (2) obtained by the Michael addition of diphenylphosphine oxide to the double‐bond of 1‐phenyl‐2‐phospholene 1‐oxide (1) was subjected to double deoxygenation to afford the corresponding bisphosphine (3, LuPhos) that was converted to bis(phosphine borane) 4 and to cis chelate platinum(II) complex 6. A mixed phosphine oxide–phosphine borane 5 was also prepared. Stereostructures of the bidentate P‐ligand 3 and the ring platinum(II) complex (6) were evaluated by quantum chemical calculations. Complex 6 used as a catalyst showed modest activity, but unusual regioselectivity in the hydroformylation of styrene and its 4‐substituted analogues. © 2011 Wiley Periodicals, Inc. Heteroatom Chem 22:730–736, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/hc.20741