Conclusions
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1.
The steric structure of adducts of dichloroketene and cyclohexene, dichloroketene and methyl-cyclohexene, dimethylketene and dihydropyran was investigated by the methods of dipole moments and molar Kerr constants.
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2.
For all the adducts, the preferential conformation of the bicyclo[4,2,0]octan-7-one system is the anti-boat conformation.
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3.
The adduct of dimethylketene and dihydropyran has the structure of 8,8-dimethyl-2-oxobicyclo-[4,2,0] octan-7-one. The formation of such a structure is apparently determined by the electron donor influence of the oxygen atom in dihydropyran on the process of cycloaddition.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 313–317, February, 1973.
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Arbuzov, B.A., Butenko, G.G., Vereshchagin, A.N. et al. Investigation of the steric structure of certain compounds of the bicyclo-[4,2,0]octan-7-one series. Russ Chem Bull 23, 285–288 (1974). https://doi.org/10.1007/BF00924670
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DOI: https://doi.org/10.1007/BF00924670