Conclusions
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1.
The interaction of phenolic Mannich bases with diethyl thiophosphite forms o-hydroxybenzylthiophosphonates, which undergo Pishchimuka rearrangement. Diethyl thiophosphite here disproportionates by reaction with diethylamine to form NN-diethyl O-ethyl amidophosphite and diethyl phosphite.
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2.
α-Substituted methyldiethylamines react with diethyl thiophosphite to form OO-diethyl NN-diethylaminomethylthiophosphonate.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 615–618, March, 1979.
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Ivanov, B.E., Krokhina, S.S., Ryzhkina, I.S. et al. Interaction of diethyl thiophosphite with phenolic mannich bases. Russ Chem Bull 28, 569–572 (1979). https://doi.org/10.1007/BF00924835
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DOI: https://doi.org/10.1007/BF00924835