NEW ASPECT OF AZO-HYDRAZONE TAUTOMERISM

被引:34
作者
JACQUES, P [1 ]
STRUB, H [1 ]
SEE, J [1 ]
FLEURY, JP [1 ]
机构
[1] ECOLE NATL SUPER CHIM,CNRS LAB 135,F-68093 MULHOUSE,FRANCE
关键词
D O I
10.1016/S0040-4020(01)88981-X
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Structures of 3,5-dimethoxy-4-hydroxyazobenzene and of a new parent compound, 2,6-dimethoxy-4-hydroxyazobenzene, are investigated. Owing to their very high solubility it was possible to proceed to a comparison of the UV, 1H NMR and 13C NMR data for the same solvent. Symmetric substitution by two OMe groups in the ring bearing the OH group results in the isolation of the azo or hydrazone tautomer, using the available positions of substitution. The usefulness of the 13C NMR technique in the investigation of azo-hydrazone tautomerism is underlined. © 1979.
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页码:2071 / 2073
页数:3
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