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Carbon-13 nuclear magnetic resonance spectra of 2H-1-benzopyran-2-ones (coumarins) in chloroform and sulfuric acid

✍ Scribed by Sojka, Stanley A.


Book ID
126405507
Publisher
American Chemical Society
Year
1975
Tongue
English
Weight
493 KB
Volume
40
Category
Article
ISSN
0022-3263

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Carbon-13 nuclear magnetic resonance spe
✍ Kazuaki Isomura; Hiroshi Taniguchi; Masaaki Mishima; Mizue Fujio; Yuho Tsuno πŸ“‚ Article πŸ“… 1977 πŸ› John Wiley and Sons 🌐 English βš– 340 KB

## Abstract Carbon‐13 n.m.r. spectra have been obtained for some methyl and phenyl substituted 2__H__‐azirines. The higher field resonance of C‐2 than that of the corresponding aziridine carbon is interpreted in terms of ring strain. Substituent effects on the chemical shifts of the azirine ring ca