Synthesis 2005(3): 485-492  
DOI: 10.1055/s-2004-834945
FEATUREARTICLE
© Georg Thieme Verlag Stuttgart · New York

New Synthetic Applications of Indium Organometallics in Cross-Coupling Reactions

Miguel A. Pena, José Pérez Sestelo*, Luis A. Sarandeses*
Departamento de Química Fundamental, Universidade da Coruña, E-15071 A Coruña, Spain
Fax: +34(981)165070; e-Mail: qfsarand@udc.es;
Further Information

Publication History

Received 19 July 2004
Publication Date:
03 December 2004 (online)

Abstract

The use of indium organometallics in multifold and sequential cross-coupling reactions is reported. Triorganoindium reagents (R3In) react, under palladium catalysis, with oligohaloarenes affording the multiple cross-coupling products in a single operation. In the reaction, the three organic groups (alkyl, aryl, alkenyl or alkynyl) attached to indium are efficiently transferred to the electrophile, with only a slight excess of organometallic reagent. We demonstrate that indium organometallics are useful reagents for sequential cross-coupling reactions. This reaction illustrates the high chemoselectivity of R3In.

1 Introduction

2 Results and Discussion

2.1 Multifold Cross-Coupling Reactions

2.2 Sequential Cross-Coupling Reactions

3 Conclusion

8

For a previous communication, see reference 5c.