The tautomerism of pyrazolines (dihydropyrazoles)

• I ALKORTA ^[1] ; J ELGUERO ^[1]
  1. [1] Instituto de Química Médica
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 60, Nº. 2, 2015, págs. 2966-2970
• Idioma: inglés
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• Resumen

  • The exception to the rule that Δ3-pyrazolines are not stable unless both nitrogen atoms are substituted that has been recently published, Tetrahedron Lett. 55, 2208, (2014), has been proved false. By means of GIAO/B3LYP/6-311++G(d,p) calculations, it has been shown that the product is a pyrazole formed by rearrangement.