Conclusions
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1.
The carbon atom signals in the13C NMR spectra of 5-oxo- and 5-thio-5-phenyl-2,4,6-triisopropyl-1,3,5-dioxaphosphorinanes are shifted upfield in going from the equatorial orientation to the axial orientation of the substituents at the phosphorus andα-carbon atoms.
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2.
The1JPC direct spin-spin coupling constant decreases upon replacing the P=O group by the P=S group.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1309–1313, June, 1983.
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Arbuzov, B.A., Il'yasov, A.V., Zyablikova, T.A. et al. 13C NMR spectra of stereoisomers of 5-oxo-and 5-thio-5-phenyl-2,4, 6-triisopropyl-1,3,5-dioxaphosphorinanes. Russ Chem Bull 32, 1182–1186 (1983). https://doi.org/10.1007/BF00953153
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DOI: https://doi.org/10.1007/BF00953153