Conclusions
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1.
Amides of phenylvinylphosphinic acid and the ethyleneimide of phenyl-β-chloroethylphosphinic acid were produced.
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2.
The IR spectra of the substances obtained were studied. On the basis of the values of the frequencies of the P=O and C=C groups, the presence of pπ-dπ-conjugation in the systems considered was hypothesized.
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3.
The rate of inversion of nitrogen in the ethyleneimides of phenylvinylphosphinic and phenyl-β-chloroethylphosphinic acids, according to the PMR data, is very high.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 839–843, May, 1966.