Synthesis 2014; 46(21): 2965-2975
DOI: 10.1055/s-0034-1378552
paper
© Georg Thieme Verlag Stuttgart · New York

Biscarboxy-Functionalized Imidazole and Palladium as Highly Active Catalytic System in Protic Solvents: Methanol and Water

Regina Martínez
Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain   Fax: +34(96)5903549   eMail: ipastor@ua.es   eMail: yus@ua.es
,
Isidro M. Pastor*
Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain   Fax: +34(96)5903549   eMail: ipastor@ua.es   eMail: yus@ua.es
,
Miguel Yus*
Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain   Fax: +34(96)5903549   eMail: ipastor@ua.es   eMail: yus@ua.es
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Publikationsverlauf

Received: 30. Juni 2014

Accepted: 07. Juli 2014

Publikationsdatum:
11. August 2014 (online)


Abstract

The coupling reaction between aryl bromides and boron reagents is efficiently catalyzed by an in situ generated palladium complex obtained from palladium(II) acetate (0.1 mol%) and 1,3-bis(carboxymethyl)imidazole (0.2 mol%). The catalytic system is very active in protic solvents, especially in methanol. Biaryl derivatives have been prepared in good isolated yields (up to >99%), and additionally styrene and stilbene derivatives have also been prepared by means of this protocol.

Supporting Information