Synthesis 2007(20): 3226-3232  
DOI: 10.1055/s-2007-990785
PAPER
© Georg Thieme Verlag Stuttgart · New York

Diastereoselective Synthesis of Novel α-Amino-α′-hydroxyphosphinates by Hydrophosphinylation of α-Amino-H-phosphinates to Aldehydes

Babak Kaboudin*a,b, Terumitsu Harukib, Takehiro Yamagishib, Tsutomu Yokomatsu*b
a Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, Zanjan 45195-1159, Iran
Fax: +98(241)4249023; e-Mail: kaboudin@iasbs.ac.ir;
b School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
Fax: +81(42)6763239; e-Mail: yokomatu@ps.toyaku.ac.jp;
Further Information

Publication History

Received 11 June 2007
Publication Date:
21 September 2007 (online)

Abstract

Synthesis of α-amino-α′-hydroxyphosphinates has been achieved through hydrophosphinylation of α-amino-H-phosphinates to aldehydes with highly retentive phosphorus chirality. Treatment of α-substituted α-amino-H-phosphinates with aldehydes in the presence of magnesium oxide without solvent gave α-amino-α′-hydroxyphosphinates. The reaction proceeded with 80-94 % retention of configuration at the phosphorus atom.

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Crystallographic data (excluding structure factors) for the X-ray crystal structure analysis reported in this paper have been deposited with the Cambridge Crystallographic Data Center (CCDC) as supplementary publication No. CCDC 644658 (for 3a) and 644659 (for 7a) copies of these data can be obtained, free of charge, upon application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK [fax: +44 (1223)336033 or e-mail: deposit@ccdc.cam.ac.uk].