Conclusions
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1.
We have studied the reaction of vinyl acetate with PC15 in CCl4 and benzene with reactant ratios of 1∶1 and 1∶2. A 1∶2 adduct is formed only at low temperatures (∼0°C) in a solvent that does not solvate it. More forcing conditions or conditions under which phosphorus chlorides are solvated form a 1∶1 adduct; this spontaneously isomerizes to the cyclic product of addition of PCl5 to two donor sites of vinyl acetate, which is catalytically converted to [2-(α,α-dichloroethoxy)-2-chloroethyl]phosphonic dichloride.
Thermolysis of the unsolvated 1∶2 adduct is accompanied by elimination of HCl and formation of a mixture of [2-(α,α-dichloroethoxy)vinyl]phosphonic dichloride and [2-(α-chlorovmyloxy)-2-chloroethyl]phosphonic dichloride.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2552–2557, November, 1977.
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Kolomiets, A.F., Fokin, A.V., Krolevets, A.A. et al. Mechanism of the reaction of vinyl acetate with phosphorus pentachloride. Russ Chem Bull 26, 2364–2367 (1977). https://doi.org/10.1007/BF00958728
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DOI: https://doi.org/10.1007/BF00958728