Utilize este identificador para referenciar este registo: http://hdl.handle.net/10451/20900
Título: Synthesis and NMR conformational studies of p-tert-butyldihomooxacalix[4]arene derivatives bearing pyridyl pendant groups at the lower rim
Autor: Marcos, PM
Ascenso, JR
Pereira, JLC
Palavras-chave: Chemistry, Organic
Data: 2002
Editora: WILEY-V C H VERLAG GMBH
Citação: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. - n. 17 (SEP 2002), p. 3034-3041
Resumo: Direct O-alkylation of p-tert-butyldihomooxacalix[4]arene (1) with 2-(chloromethyl)pyridine hydrochloride and NaH in DMF provided six of the nine possible (2-pyridylmethoxy)dihomooxacalix[4]arene conformers in the cone conformation. Mono- and tetrasubstituted derivatives were obtained, as well as all four (1,2-, 1,3-, 1,4- and 2,3-) types of disubstituted compounds. The conformations and the substitution patterns were established by NMR spectroscopy (H-1, C-13, COSY, NOESY and TOCSY 1D). Front the same reaction, another tetrasubstituted derivative (6) in a 1,2-alternate A conformation was also isolated and characterised. (C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
URI: http://hdl.handle.net/10451/20900
ISSN: 1434-193X
Aparece nas colecções:FF - Produção Científica 2000-2009

Ficheiros deste registo:
Não existem ficheiros associados a este registo.


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.