Carbon-13 NMR Spectra of 4-Chromanone, 4H-1-Benzothiopyran-4-one, 4H-1-Benzothiopyran-4-one 1,1-Dioxide, and Their Substituted Homologs

The 13C NMR spectra of 4-chromanone, 4H-1-benzothiopyran-4-one, 4H-1-benzothiopyran-4-one 1,1-dioxide, and their methyl and phenyl substituted homologs were examined. The salient effect depending on the kinds of the hetero atoms or the group at the 1-position has been observed on the chemical shifts...

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Bibliographic Details
Published inBulletin of the Chemical Society of Japan Vol. 50; no. 10; pp. 2789 - 2791
Main Authors Senda, Yasuhisa, Kasahara, Akira, Izumi, Taeko, Takeda, Toru
Format Journal Article
LanguageEnglish
Published The Chemical Society of Japan 01.10.1977
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Summary:The 13C NMR spectra of 4-chromanone, 4H-1-benzothiopyran-4-one, 4H-1-benzothiopyran-4-one 1,1-dioxide, and their methyl and phenyl substituted homologs were examined. The salient effect depending on the kinds of the hetero atoms or the group at the 1-position has been observed on the chemical shifts, especially for C-2, C-3, C-8, C-4a, and C-8a.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.50.2789