Synlett 2002(2): 0273-0274
DOI: 10.1055/s-2002-19775
LETTER
© Georg Thieme Verlag Stuttgart · New York

A Practical Synthesis of Pyridylboranes via Magnesium-Halogen Exchange

Weiling Cai, David H. Brown Ripin*
Process Research and Development, Central Research Division, Pfizer Inc., Eastern Point Road, Groton, Connecticut 06340, USA
Fax: +1(860)4413630; e-Mail: David_B_Ripin@groton.pfizer.com;
Further Information

Publication History

Received 11 November 2001
Publication Date:
02 February 2007 (online)

Abstract

Dialkylpyridylboranes can be prepared by the reaction of the corresponding pyridylmagnesium chloride with diethylmethoxyborane at 0-25 °C. The pyridylmagnesium chlorides are generated from the corresponding bromopyridines via magnesium-halogen exchange reaction.

8

All products have been fully characterized by spectroscopic methods after isolation by crystallization.