Conclusions
Independent of the nature of the solvent, the reaction of 2-acetyl-5-methyl-1,2,3-diazaphosphole with diazoacetic ester proceeds without the evolution of nitrogen to give Δ2-phosphapyrazoline derivatives. The latter in CH2Cl2, CH3CN, or alcohols are isomerized to compounds with two NH groups.
Literature cited
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B. A. Arbuzov, É. N. Dianova, and S. M. Sharipova, Izv. Akad. Nauk SSSR, Ser. Khim., 1113 (1981).
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Elderfield (ed.), Heterocyclic Compounds [Russian translation], IL, Moscow (1961), p. 58.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2395–2397, October, 1983.
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Arbuzov, B.A., Lisin, A.F. & Dianova, É.N. Reaction of 2-acetyl-5-methyl-1, 2, 3-diazaphosphole with diazoacetic ester. Russ Chem Bull 32, 2158–2160 (1983). https://doi.org/10.1007/BF00955796
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DOI: https://doi.org/10.1007/BF00955796