Synthesis 2005(8): 1279-1290  
DOI: 10.1055/s-2005-861878
PAPER
© Georg Thieme Verlag Stuttgart · New York

The Synthesis and Reactivity of Phosphinous Acid-Boranes

Marek Stankeviča, K. Michał Pietrusiewicz*a,b
a Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland
b Department of Organic Chemistry, Maria Curie-Skodowska University, ul. Gliniana 33, 20-614 Lublin, Poland
Fax: +48(22)6326681; e-Mail: kmp@icho.edu.pl;
Further Information

Publication History

Received 3 January 2005
Publication Date:
17 March 2005 (online)

Abstract

Phosphinic acid chlorides are converted directly into phosphinous acid-boranes in a process utilizing BH3·THF complex as a reducing agent. The process is general and affords phosphinous acid-boranes in good to very high yields. Phosphinous acid-boranes have been found to react readily with alkylating, acylating, reducing, halogenating and deborating agents to produce the corresponding phosphinous acid-borane esters, phosphinous acid-borane anhydrides, sec-phosphine oxides, sec-phosphine boranes and phosphinic acid halides, respectively. The efficient procedures for these conversions have been developed and their scope has been outlined.