Synthesis and Crystal Structures of 4,5-Dihydroimidazo[1,5-b]pyrazol-6-ones

Synthesis and Crystal Structures of 4,5-Dihydroimidazo[1,5-b]pyrazol-6-ones

The synthesis of previously unattainable 2,5-disubstituted 4,5-dihydroimidazo[1,5-b]pyrazol-6-ones has been developed. Electrochemical reductions of readily available 2,2,2-trichloroethylideneacetophenones were followed by reaction with hydrazine, leading to 3-aryl-5-dichloromethyl-2-pyrazolines. Th...

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Bibliographic Details
Main Authors: Antonio Guirado, María Vera, Bruno Martiz, Francisco Ródenas, José A. Sandoval, Enrique Alarcón, Delia Bautista
Format: Article
Language:English
Published: Georg Thieme Verlag KG 2020-10-01
Series:SynOpen
Subjects:
chloral
acetophenones
pyrazolines
heterocycles
imidazo­-[1,5-b]pyrazolones
Online Access:http://www.thieme-connect.de/DOI/DOI?10.1055/s-0040-1707304

Internet

http://www.thieme-connect.de/DOI/DOI?10.1055/s-0040-1707304

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