Conclusions
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1.
The cyclohexane ring, 1,4-condensed with two small rings, exists in two forms: in a nonplanar form with a trans-orientation of the rings, and in the conformation of a syn — synbathtub with a cis-orientation.
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2.
The N-phenylimide of cis-4-cyclohexene-1,2-dicarboxylic acid is epoxidated in the cis-position.
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3.
In solutions the imides of cyclohexenedicarboxylic acids are represented by equilibrium mixtures of the syn- and anti-bathtub conformations.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 865–868, April, 1975.
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Timosheva, A.P., Vul'fson, S.G., Sorochinskaya, E.I. et al. Study of conformation of some epoxidated cyclohexanes. Russ Chem Bull 24, 781–784 (1975). https://doi.org/10.1007/BF00920693
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DOI: https://doi.org/10.1007/BF00920693