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Enthalpies of Formation of N -Substituted Pyrazoles and Imidazoles

✍ Scribed by Mó, Otilia; Yáñez, Manuel; Roux, María Victoria; Jiménez, Pilar; Dávalos, Juan Z.; Ribeiro da Silva, Manuel A. V.; Ribeiro da Silva, Maria das Dores M. C.; Matos, M. Agostinha R.; Amaral, Luisa M. P. F.; Sánchez-Migallón, Ana; Cabildo, Pilar; Claramunt, Rosa; Elguero, José; Liebman, Joel F.


Book ID
117989263
Publisher
American Chemical Society
Year
1999
Tongue
English
Weight
103 KB
Volume
103
Category
Article
ISSN
1089-5639

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Formation of Pyrazoles and of Imidazoles
✍ David Scarpetti†; Kunio Kano††; Jean-Pierre Anselme 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 376 KB

The cyclization of phenacyl ethylene ketal (pok) hydrazones of glyoxals, benzaldehyde and acetaldehyde to the pyrazoles is described, in the case of the hydrazones of benzaldehyde and acetaldehyde, the corresponding imidazoles are also formed. A mechanism is suggested for the formation of the imidaz