Summary
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1.
Phosphorus trichloride adds toα,β-unsaturated cyclic ketones with formation after hydrolysts of cyclicγ-oxophosphonic acids.
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2.
Cyclicγ-oxophosphonic acids of identical structure are obtained by the addition of diethylphosphorous acid toα,β-unsaturated cyclic ketones and the subsequent hydrolysts of the esters formed.
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3.
The fact that cyclicγ-oxophosphonic acids are formed fromαβ-unsaturated cyclic ketones disproves Conant's hypothesis concerning the mechanism of the addition of phosphorous trichloride toαβ-unsaturated ketones.
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Kabachnik, M.I., Medved, T.Y. The reaction of phosphorus trichloride with unsaturated cyclic ketones. Russ Chem Bull 1, 517–522 (1952). https://doi.org/10.1007/BF01172007
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DOI: https://doi.org/10.1007/BF01172007