Synthesis 2008(7): 1126-1132  
DOI: 10.1055/s-2008-1066992
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Chiral α-(N-Sulfoximido) Phosphines, Phosphine Oxides, and Phosphonates through Hydrophosphination and Hydrophosphorylation of N-Vinyl Sulfoximines

Ralf Helmut Hetzer, Hans-Joachim Gais*, Gerhard Raabe
Institut für Organische Chemie, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Landoltweg 1, 52074 Aachen, Germany
Fax: +49(241)8092665; e-Mail: gais@rwth-aachen.de;
Further Information

Publication History

Received 8 November 2007
Publication Date:
13 March 2008 (online)

Abstract

The reaction of N-vinyl sulfoximines with HPPh2, HP(O)Ph2, and HP(O)(OMe)2 gave the corresponding α-(N-sulfoximido) phosphines, phosphine oxides, and phosphonates, respectively, with high regioselectivity in high yield. The N-vinyl sulfoximines showed an enamine-like regioselectivity in hydrophosphination and hydrophosphorylation (Pudovik reaction). While the acid-catalyzed hydrolysis of a cyclic N-vinyl sulfoximine gave the corresponding NH-sulfoximine and cyclohexanone, its hydro­boration/oxidation afforded the corresponding N-(β-hydroxycyclohexenyl) sulfoximine. The structure of an α-(N-sulfoximido) phosphine was determined by X-ray crystal structure analysis.

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Crystallographic data have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication no. CCDC 662748. Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK [fax: +44(1223)336033, e-mail: deposite@ccdc.cam.ac.uk, or www.ccdc.cam.ac.uk].