Download PDF
Synlett 1998; 1998(10): 1069-1070
DOI: 10.1055/s-1998-1881
letter
© 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.

First Diels-Alder Reaction of Pyrazolyl Imines under Microwave Irradiation

Angel Díaz-Ortiz* , José R. Carrillo, María J. Gómez-Escalonilla, Antonio de la Hoz, Andrés Moreno, Pilar Prieto
  • *Facultad de Química, Universidad de Castilla-La Mancha, 13071-Ciudad Real, Spain
Further Information

Publication History

Publication Date:
31 December 2000 (online)

  PDF Download  Permissions and Reprints All articles of this category

Microwave irradiation in solvent-free conditions induces pyrazolyl 2-azadienes to undergo Diels-Alder cycloadditions with nitroalkenes within 5-10 min to give good yields of pyrazolo[3,4-b]pyridines. This is the first example of a [4 + 2] cycloaddition of a 2-azadiene involving a pryazole ring. By classical heating, these reactions do not occur or afford only traces of the products.

2-azadiene - pyrazolyl derivative - Diels-Alder - nitroalkene - microwave