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Communication | Special issue | Vol 76, No. 2, 2008, pp.1081-1085
Published online, 30th June, 2008
DOI: 10.3987/COM-08-S(N)123
Synthesis of Chiral Tetraaminophosphonium Chlorides from N-Boc α-Amino Acid Esters

Daisuke Uraguchi, Sawako Sakaki, Yusuke Ueki, Takaki Ito, and Takashi Ooi*

*Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan

Abstract

Preparation of chiral tetraaminophosphonium chlorides of type 1 starting from N-Boc α-amino acid esters is described. Modified conditions for the displacement of the tertiary hydroxy group of the intermediary amino alcohol pave a way for the assembly of 1 with various geminal aromatic groups, particularly those having electron-withdrawing substituents.