Conclusions
The reaction of equimolar amounts of acetylacetone and diethylphosphorous acid at room temperature in the presence of sodium alcoholate gives the diethyl ester of 1-methyl-1-hydroxy-3-ketobutylphosphonic acid. When heated or when treated with water-removing agents the latter cleaves water with the formation of the diethyl ester of 1-methyl-3-keto-1-buten-1-yl-phosphonicacid. The reaction of two moles of diethyl-phosphorous acid with one mole of acetylacetone under the same conditions gave 2-oxo-2-ethoxy-3,5-dimethyl-3-hydroxy-5-diethoxyphosphono-1-oxa-2-phospholane.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2757–2761, December, 1971.
We wish to thank T. A. Zyablikova and É. I. Gol'dfarb, co-workers at the A. E. Arbuzov Institute of Organic and Physical Chemistry of the Academy of Sciences of the USSR, for taking the NMR spectra.
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Arbuzov, B.A., Bogonostseva, N.P., Vinogradova, V.S. et al. Reaction of acetylacetone with diethylphosphorous acid. Russ Chem Bull 20, 2614–2617 (1971). https://doi.org/10.1007/BF00853635
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DOI: https://doi.org/10.1007/BF00853635