Long-range correlations ((n)j (C,H) n > 3) in the HMBC spectra of 3-(4-oxo-4H-chromen-3-YL)-acrylic acid ethyl esters

Author	dc.contributor.author	Araya Maturana, Ramiro
Author	dc.contributor.author	Gavin Sazatornil, J. A.	es_CL
Author	dc.contributor.author	Heredia Moya, Jorge	es_CL
Author	dc.contributor.author	Pessoa Mahana, Hernán	es_CL
Author	dc.contributor.author	Weiss López, Boris	es_CL
Admission date	dc.date.accessioned	2008-09-30T14:59:05Z
Available date	dc.date.available	2008-09-30T14:59:05Z
Publication date	dc.date.issued	2005-05
Cita de ítem	dc.identifier.citation	JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY 16(3B):657-661	en
Identifier	dc.identifier.issn	0103-5053
Identifier	dc.identifier.uri	https://repositorio.uchile.cl/handle/2250/120530
Abstract	dc.description.abstract	A systematic study about the long-range correlations observed in the HMBC spectra of a series of cis and trans 3-(4-oxo-4H-chromen-3-yl)-acrylic acid ethyl esters, and 5-hydroxy derivatives, was carried out. The results were compared with those observed in IMPEACH-MBC and CIGARHMBC spectra. An uncommon (5)J(C,H) between the methyl protons and the C-alpha to the carbonyl group was observed in these systems as well as in ethyl chrotonate. The complete assignments of the H-1 and C-13 NMR spectra are provided.	en
Lenguage	dc.language.iso	en	en
Publisher	dc.publisher	SOC BRASILEIRA QUIMICA	en
Keywords	dc.subject	NMR	en
Título	dc.title	Long-range correlations ((n)j (C,H) n > 3) in the HMBC spectra of 3-(4-oxo-4H-chromen-3-YL)-acrylic acid ethyl esters	en
Document type	dc.type	Artículo de revista