Synlett 2006(18): 3001-3004  
DOI: 10.1055/s-2006-948173
LETTER
© Georg Thieme Verlag Stuttgart · New York

Suzuki Cross-Couplings on Aryl (Heteroaryl) Bromides and Chlorides with Bulky Aliphatic Phosphines/Pd(0)-Triolefinic Macrocyclic Catalyst

Marcial Moreno-Mañas*, Roser Pleixats*, Anna Serra-Muns
Department of Chemistry, Universitat Autònoma de Barcelona, Cerdanyola, 08193 Barcelona, Spain
Fax: +34(9)35811265; e-Mail: roser.pleixats@uab.es;
Further Information

Publication History

Received 23 March 2006
Publication Date:
04 August 2006 (online)

Abstract

The combination of a bulky aliphatic phosphine, e.g. tricyclohexylphosphine or the tetrafluoroborate salt of tri-tert-butylphosphine, with the Pd(0) complex of a 15-membered triolefinic macrocycle is an excellent catalyst for the Suzuki cross-coupling of aryl and heteroaryl bromides and chlorides. The palladium can be recovered in the form of the initial complex.

1

Deceased on 20th February 2006.

16

GLC-MS analyses of two different samples of commercially available P(t-Bu)3 showed that they contained mixtures of P(t-Bu)3, OP(t-Bu)3, and OP(t-Bu)2OH.