Y. Senda, A. Kasahara, T. Izumi
Oct 1, 1977
Citations
0
Influential Citations
17
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
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.