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Ultraviolet spectra of 4-alkylidene-2, 5-cyclohexadienones

J Pospíšek, M Píšová, M Souček

文献索引:Pospisek,J. et al. Collection of Czechoslovak Chemical Communications, 1975 , vol. 40, p. 142 - 148

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被引用次数: 22

摘要

Dehydrohalogenation of 4-substituted benzyl halogenides or oxidation of substituted 4- alkylphenols gave 4-alkylidene-2, 5-cyc1ohexadienones XXIII-XLIV. From the comparison of their ultraviolet spectra it follows that in the region of nn* transitions the wave length of the absorption maximum is given by the sum of the wave lengths of unsubstituted 4-methylene~ 2, 5-cyc1o hexadienone and the increments characteristic of each substituent.

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