Structure of a 4-Nitroso-5-aminopyrazole and Its Salts:  Tautomerism, Protonation, and E/Z Isomerism

Author:

Holschbach Marcus H.1,Sanz Dionisia1,Claramunt Rosa M.1,Infantes Lourdes1,Motherwell Sam1,Raithby Paul R.1,Jimeno María Luisa1,Herrero David1,Alkorta Ibon1,Jagerovic Nadine1,Elguero José1

Affiliation:

1. Institut für Nuklearchemie (INC), Forschungszentrum Juelich, D-52425 Juelich, Germany, Departamento de Química Orgánica y Biología, Facultad de Ciencias, UNED, Senda del Rey, 9, E-28040 Madrid, Spain, Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK, Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK, and Instituto de Química Médica & Centro de Química Orgánica ‘Manuel Lora-Tamayo', CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain

Publisher

American Chemical Society (ACS)

Subject

Organic Chemistry

Reference26 articles.

1. Synthesis of 2-benzyl-2H-pyrazole-3,4-diamine dihydrochloride

2. Towards an unified hydrogen-bond theory

3. Elguero, J.; Marzin, C.; Katritzky, A. R.; Linda, P.The Tautomerism ofHeterocycles; Academic Press:  New York, 1976; pp 179, 422, and 500.

4. Reichardt, C.Solvents and Solvent Effects in Organic Chemistry, 3rd ed.; VCH:  Weinheim, Germany, 2003; (a) p 118, (b) p 428.

5. Cyclocondensation of α-hydroxyimino-β-alkyl/arylimino-β-methylthioketones with hydrazine hydrate: Synthesis of 3(5)-aryl-5(3)-alkyl/arylamino-4-nitroso (or amino) pyrazoles

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