Abstract
Based on the31P NMR spectral data, the isomerization of the S-2-hydroxyalkyl esters of thiophosphoric and thiophosphonic acids to the corresponding 2-mercaptoalkyl esters of phosphoric and phosphonic acids proceeds with the formation of stable intermediate compounds, which, in all probability, contain the 1,3,2-thiaoxaphospholane ring. The 2-mercaptoalkyl esters of phosphorus acids decompose to either the dialkylphosphoric or phosphonic acid and alkylene sulfide. Compounds of the 1,3,2-thiaoxaphospholane series are not formed during the decomposition.
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