PDF herunterladen
Synthesis 1997; 1997(5): 563-566
DOI: 10.1055/s-1997-1230
paper
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

Palladium(0)-Catalyzed Preparation of 4-Arylpyrazoles

José Elguero1 , Carlos Jaramillo2 , Carmen Pardo3
  • 1Instituto de Química Médica, CSIC, c/Juan de la Cierva 3, E-28006 Madrid, Spain
  • 2Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, E-28040 Madrid, Spain
  • 3Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, E-28040 Madrid, Spain, Fax +34(1)3944103; E-mail chpardo@eucmax.sim.ucm.es
Weitere Informationen

Publikationsverlauf

Publikationsdatum:
31. Dezember 2000 (online)

  als PDF herunterladen  Lizenzen und Reprints Alle Artikel dieser Rubrik

A general method for the palladium(0)-catalyzed preparation of 4-arylpyrazoles 2, by coupling of either 4-halopyrazoles 3 with arylstannanes 4 or 4-tributylstannyl-1-tritylpyrazole 5 with aryl iodides 6, is reported. Deprotection of trityl and/or methyl groups in compounds 2 led to N-unsubstituted 4-arylpyrazoles 1.

4-arylpyrazoles - 4-stannylpyrazoles - Pd(0) cross-coupling