Conclusions
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1.
The hydrogenation of dimedon gave 5,5-dimethyl-1,3-cyclohexanediol in 94% yield, which has a cis-configuration, while the hydrogenation of 2,2-dimethyl-1,3-cyclohexanedione gave 2,2-dimethyl-1,3-cyclohexanediol, which has a trans-configuration.
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2.
The dehydration of 5,5-dimethyl-1,3-cyclohexanediol under the influence of phthalic anhydride is a convenient method for the synthesis of 5,5-dimethyl-1,3-cyclohexadiene.
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See [1] for Communication 51.
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1288–1293, June, 1973.
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Mironov, V.A., Fedorovich, A.D. & Akhrem, A.A. Cyclic unsaturated compounds Communication 52. Synthesis, configuration, and dehydration of 2,2- and 5,5-dimethyl-1,3-cyclohexanediols. Russ Chem Bull 22, 1245–1250 (1973). https://doi.org/10.1007/BF00928597
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DOI: https://doi.org/10.1007/BF00928597