Conclusions
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1.
Oxidative rearrangement of cycloalkanone cyanhydrins is most efficiently initiated by Ce(IV) ammonium nitrate and the S2O 2−8 /Ag(I) and S2O 2−8 /Ce(III) oxidant systems. Here the cyclopentanone and cyclohexanone cyanhydrins are converted to 5- and 6-cyanoalkanoic acids, while cycloheptanone cyanhydrin is converted to 4-cyanocycloheptanone.
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2.
Rearrangement of cycloheptanone cyanhydrin to 4-cyanocycloheptanone also proceeds efficiently by the action of peroxydisulfate ion in the absence of silver and cerium ions.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1361–1364, June, 1986.
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Ogibin, Y.N., Gorozhankin, S.K. & Nikishin, G.I. Oxidative rearrangement of cycloalkanone cyanhydrins: efficiency of various oxidants and oxidant systems. Russ Chem Bull 35, 1235–1238 (1986). https://doi.org/10.1007/BF00956605
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DOI: https://doi.org/10.1007/BF00956605