Conclusions
In the absence of catalysts, the reaction of dimethyl phosphite and monomethyl phenylphosphonite with 2-methyl-3,4,5-triphenylcyelopentadienone goes with the formation of unconjugatedβ-phosphonoketones, which under the reaction conditions undergo prototropic isomerization to the conjugatedβ-phosphonoketones. In contrast to alcohols, dimethyl phosphite and monomethyl phenylphosphonite when reacted with the tricyclone do not form the products of 1,4-addition to the conjugated C=C-C=O system of the cyclone.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 904–909, April, 1980.
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Arbuzov, B.A., Fuzhenkova, A.V. & Galyautdinov, N.I. Reaction of dimethyl phosphite and monomethyl phenylphosphonite with 2-methyl-3,4,5-triphenylcyclopentadienone. Russ Chem Bull 29, 651–656 (1980). https://doi.org/10.1007/BF00961623
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DOI: https://doi.org/10.1007/BF00961623