Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/8647
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Campos, Ana M. F. Oliveira | - |
dc.contributor.author | Salaheldin, Abdellatif M. | - |
dc.contributor.author | Rodrigues, Lígia M. | - |
dc.date.accessioned | 2009-01-22T16:14:46Z | - |
dc.date.available | 2009-01-22T16:14:46Z | - |
dc.date.issued | 2007-11 | - |
dc.identifier.citation | "Arkivoc." ISSN 1551-7004. 2007:16 (Nov. 2007) 92-100. | en |
dc.identifier.issn | 1551-7004 | en |
dc.identifier.issn | 1551-7012 | en |
dc.identifier.uri | https://hdl.handle.net/1822/8647 | - |
dc.description.abstract | 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. | en |
dc.description.sponsorship | Fundação para a Ciência e Tecnologia (FCT) - POCTI-SFA-3-686, SFRH/BPD/31490/2006 | por |
dc.description.sponsorship | FEDER | por |
dc.language.iso | eng | en |
dc.publisher | ARKAT USA, Inc. | en |
dc.rights | openAccess | en |
dc.subject | Cyanopyrazoles | en |
dc.subject | Pyrazolo[3,4-d]pyrimidines | en |
dc.subject | Dimroth rearrangement | en |
dc.title | Synthesis of some novel pyrazolo[3,4-d]pyrimidine derivatives | en |
dc.type | article | por |
dc.peerreviewed | yes | en |
dc.relation.publisherversion | http://www.arkat-usa.org/ | en |
sdum.number | XVI | en |
sdum.pagination | 92-100 | en |
sdum.publicationstatus | published | en |
sdum.volume | 2007 | en |
oaire.citationStartPage | 92 | por |
oaire.citationEndPage | 100 | por |
oaire.citationIssue | 16 | por |
oaire.citationVolume | 2007 | por |
dc.identifier.doi | 10.3998/ark.5550190.0008.g10 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Arkivoc | por |
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 |