Conclusions
A number of azo derivatives of 2,6-diphenyl-1,4-benzoquinone diazide have been prepared. In the crystalline state, these generally exist in the azophenol form. After prolonged standing in CDCl3 solution, they slowly isomerize to the hydrazo form, an equilibrium being established.
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A. A. Efremenko, G. A. Nikiforov, and V. V. Ershov, Izv. Akad. Nauk SSSR, Ser. Khim., 2841 (1971).
G. A. Nikiforov, K. de Jong, L. G. Plekhanova, and V. V. Ershov, Izv. Akad. Nauk SSSR, Ser. Khim., 2752 (1978).
S. Forsen, M. Nilson, J. Elvidge, J. Burton, and R. Steven, Acta Chem. Scand.,18, 513 (1964).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 405–408, February, 1979.
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de Jong, K., Ershov, V.V., Nikiforov, G.A. et al. Phenyl-substituted 1,4-benzoquinone diazides 2. Nitrogen coupling of 2,6-diphenyl-1,4-benzoquinone diazide with Β-dicarbonyl compounds. Russ Chem Bull 28, 374–377 (1979). https://doi.org/10.1007/BF00925888
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DOI: https://doi.org/10.1007/BF00925888