| Autor: |
Nakanishi, Waro, Kusuyama, Yoshiaki, Ikeda, Yoshitsugu, Iwamura, Hiizu |
| Zdroj: |
Bulletin of the Chemical Society of Japan; October 1983, Vol. 56 Issue: 10 p3123-3128, 6p |
| Abstrakt: |
1H and 13C CIDNP signals were observed in the methyl group of o-(methylthio)benzoic acid and the methylene group of 3,1-benzoxathian-4-one (6) during the thermal decomposition of t-butyl o-(methylthio)perbenzoate. The results show that the free “o-(methylthio)benzoyloxyl radical” itself is better represented as the bridged sulfuranyl radical in which most of the spin density is localized at the sulfur atom rather than in the carboxyl. Thermolysis of t-butyl o-(methylthio)- and o-(phenylthio)perbenzoates-carbonyl-17Owas carried out and the oxygen labels were detected by 17O NMR spectroscopy preferentially at the carbonyl oxygen of 6and diphenyl 2,2′-dithiodibenzoate ruling out the zwitterionic radical structure. The migration of phenyl group and the peroxomonosulfate oxidation of o-(phenylthio)benzoic acid are also discussed. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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