Conclusions
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1.
The reductive cyclization of polychloroalkanes of formula RCHClCH2CCl3 (R = H or C6H5) to form cyclopropane compounds is effected by treatment with zinc in ethanol.
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2.
The formation of chlorinated cyclopropanones by cyclization of polychloroalkanes of the type RCCl2CH2CHClC6H5 (R=Cl or CH3) indicates that the mechanism of reductive cyclizations is the same for compounds with CCl2and CCl3 groups, starting with 1,3-dechlorination.
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3.
The presence of a\(\begin{array}{*{20}c} \backslash \\ / \\ \end{array} CCl - CCl\begin{array}{*{20}c} / \\ \backslash \\ \end{array} \) fragment in the γ position to the CCl3 group hinders reductive cyclization.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 392–395, February, 1979.
The authors wish to thank L. D. Sychkova for supplying the sample of l-methyl-2-phenylcyclopropane.
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Freidlina, R.K., Kamyshova, A.A., Posledova, N.N. et al. Synthesis of cylclopropanes by reductive cyclization of polychloroalkanes containing a CCl3 OR CCl2 group. Russ Chem Bull 28, 362–365 (1979). https://doi.org/10.1007/BF00925884
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DOI: https://doi.org/10.1007/BF00925884