Synlett 2011(7): 959-963  
DOI: 10.1055/s-0030-1259727
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York

Direct Arylation of Heteroarenes Catalyzed by a Palladium-1,10-Phenanthroline Complex

Ryo Takita*a,b, Daichi Fujitaa, Fumiyuki Ozawa*a
a International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
Fax: +81(774)383039; e-Mail: ozawa@scl.kyoto-u.ac.jp;
b Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
e-Mail: takita@mol.f.u-tokyo.ac.jp;
Weitere Informationen

Publikationsverlauf

Received 10 December 2010
Publikationsdatum:
10. März 2011 (online)

Zoom Image

Abstract

A new entry in direct arylation of heteroarenes using Pd(OAc)2 and 1,10-phenanthroline as a nitrogen-based ligand is reported. The long induction period observed at the initial stage of the reaction was effectively reduced by modification of the catalyst preparation, leading to improved chemical yields (69-92%) and shortening of reaction times (3-10 h).