Synlett 2014; 25(3): 336-342
DOI: 10.1055/s-0033-1340319
letter
© Georg Thieme Verlag Stuttgart · New York

A Robust, Moisture- and Air-Stable Phosphine Mono-Ylide Palladacycle Precatalyst: A Simple and Highly Efficient System for Mizoroki–Heck Reactions

Seyyed Javad Sabounchei*
a   Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65174, Iran   Fax: +98(81)18273231   Email: jsabounchei@yahoo.co.uk
,
Mohsen Ahmadi
a   Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65174, Iran   Fax: +98(81)18273231   Email: jsabounchei@yahoo.co.uk
,
Tayebeh Azizi
b   Department of Chemistry, Payame Noor University (PNU), Hamedan   Iran
,
Mohammad Panahimehr
a   Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65174, Iran   Fax: +98(81)18273231   Email: jsabounchei@yahoo.co.uk
› Author Affiliations
Further Information

Publication History

Received: 17 September 2013

Accepted after revision: 31 October 2013

Publication Date:
06 December 2013 (online)


Abstract

A palladacycle phosphine mono-ylide complex was identified as an efficient catalyst system for the Mizoroki–Heck cross-coupling reactions of aromatic or aliphatic olefins with a variety of aryl bromides and chlorides, including those containing electron-donating or electron-withdrawing substituents. The reactions, which proceeded in moderate to excellent yields, required relatively low loadings of palladium (10 ppm) and were performed under aerobic conditions. High catalyst activities with turnover frequencies of up to 20,000 h–1 were observed at 130 °C.