LETTER	Synlett 2006: 1867-1870   DOI: 10.1055/s-2006-947365
© Georg Thieme Verlag Stuttgart · New York
An Efficient Catalyst System for Palladium-Catalyzed Borylation of Aryl Halides with Pinacolborane
Miki Murata*, Tomoko Sambommatsu, Shinji Watanabe, Yuzuru Masuda
Department of Materials Science, Kitami Institute of Technology, Kitami 090-8507, Japan Fax: +81(157)264973; e-Mail: muratamk@mail.kitami-it.ac.jp;
Received 25 April 2006

Abstract

The combination of Pd(dba)₂ and bis(2-di-tert-butyl­phosphinophenyl)ether has proven to be efficient for the cross-­coupling of pinacolborane with aryl bromides and chlorides. The substrate scope is broad and the present system enables the synthesis of ortho-, meta-, and para-substituted electron-rich and -deficient arylboronates.

Key words

boron - palladium - catalysis - cross-coupling - ligands