Conclusions
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1.
1-Phenyl-4,4-dimethyl-1,4-phosphasilacyclohexane was formed upon the photochemical addition of phenylphosphine to dimethyl(divinyl)silane and gave 1-phenyl-4,4-dimethyl-1-seleno-1,4-phosphasilacyclohexane upon reaction with elemental selenium.
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2.
NMR spectroscopy indicated that 1-phenyl-4,4-dimethyl-1,4-phosphasilacyclohexane and 1-phenyl-4,4-dimethyl-1-seleno-1,4-phosphasilacyclohexane exist in the chair conformation with predominance of the conformer with axial orientation of the unshared electron pair of the phosphorus atom.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 451–453, February, 1987.
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Voronkov, M.G., Kudyakov, N.M., Albanov, A.I. et al. 1-phenyl-4,4-dimethyl-1,4-phosphasilacyclohexane and its selenide. Russ Chem Bull 36, 409–411 (1987). https://doi.org/10.1007/BF00959395
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DOI: https://doi.org/10.1007/BF00959395