Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/8647
Título: | Synthesis of some novel pyrazolo[3,4-d]pyrimidine derivatives |
Autor(es): | Campos, Ana M. F. Oliveira Salaheldin, Abdellatif M. Rodrigues, Lígia M. |
Palavras-chave: | Cyanopyrazoles Pyrazolo[3,4-d]pyrimidines Dimroth rearrangement |
Data: | Nov-2007 |
Editora: | ARKAT USA, Inc. |
Revista: | Arkivoc |
Citação: | "Arkivoc." ISSN 1551-7004. 2007:16 (Nov. 2007) 92-100. |
Resumo(s): | Reaction of ethyl imidates derived from N-aryl-5-amino-4-cyanopyrazoles with amines or arylhydrazines gave only 4-substituted pyrazolo[3,4-d]pyrimidines, resulting from cyclization followed by Dimroth rearrangement. From the reaction with arylhydrazines, a mixture of the hydrazines and their oxidized forms, the azo products, was obtained. This was proven by an independent synthesis starting from the corresponding 4-chloropyrazolo[3,4-d]pyrimidines as starting material. The structures of the compounds obtained were confirmed by mass spectrometry, 1H and 13C NMR. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/8647 |
DOI: | 10.3998/ark.5550190.0008.g10 |
ISSN: | 1551-7004 1551-7012 |
Versão da editora: | http://www.arkat-usa.org/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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arkivoc.pdf | Documento principal | 231,95 kB | Adobe PDF | Ver/Abrir |