Conclusions
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1.
In solution, the acetyloxiranes exist as binary gauche-conformer mixtures, the position of the point of conforniational equilibrium being determined by the presence and orientation of the CH3 group in the ring.
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2.
The more polar gauche form with an angle of rotation of 30 ±10° predominates in the case of the benzoyloxiranes.
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3.
The oxide of benzalpinacoline exists as a single conformer with the carbonyl group rotated out of s-cis orientation by 15°.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 828–835, April, 1978.
The authors would like to thank O. G. Kulinkovich for participation in a discussion of the results obtained in this work.
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Arbuzov, B.A., Donskova, A.I., Vul'fson, S.G. et al. Geometrical structures of substituted oxiranes 5. Dipole moments and kerr constants of the acetyloxiranes. Russ Chem Bull 27, 714–720 (1978). https://doi.org/10.1007/BF00925291
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DOI: https://doi.org/10.1007/BF00925291