Synthesis 2011(2): 292-302  
DOI: 10.1055/s-0030-1258370
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

HF-Free, Direct Synthesis of Tetrabutylammonium Trifluoroborates

G. K. Surya Prakash*, Fabrizio Pertusati, George A. Olah*
Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089-1661, USA
Fax: +1(213)7406679; e-Mail: gprakash@usc.edu;
Further Information

Publication History

Received 3 September 2010
Publication Date:
15 December 2010 (online)

Abstract

The direct preparation of tetrabutylammonium trifluoroborates from boronic acids without using HF or the corresponding potassium salt is described. The method is highly efficient for aromatic and aliphatic boronic acids. This protocol, however, was less efficient for boronic acids that were sensitive to protiodeboronation.