Conclusions
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1.
The IR and electronic absorption spectra and the chromatographic behavior of the diazo coupling products of 1,2-diphenyl-3, 5-dioxopyrazolidine have been examined.
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2.
A hydrazone structure with intramolecular hydrogen bonding has been assumed.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 877–884, April, 1968.
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Yakutovich, V.G., Moldaver, B.L., Kitaev, Y.P. et al. The chemistry of pyrazolidine. Russ Chem Bull 17, 838–843 (1968). https://doi.org/10.1007/BF00905765
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DOI: https://doi.org/10.1007/BF00905765