Synthesis of novel derivatives of 4-amino-3,5-dicyanopyrazole

• Autor(es): Campos, Ana M. F. Oliveira ; Gonçalves, M. Sameiro T. ; Rodrigues, Lígia M. ; Proença, M. Fernanda R. P. ; Griffiths, John ; Maia, Hernâni L. S. ; Kaja, Martin ; Hrdina, Radim
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/1822/1246
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Pyrazole; Dicyanopyrazole
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

Diazotisation of substituted arylamines followed by reaction with malononitrile gave substituted arylazomalononitriles. Cyclisation of these intermediates with chloroacetonitrile and triethylamine, as base, gave the corresponding new aminodicyanopyrazoles, in 22–80% yields.