Conclusions
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1.
During the process of cycloamination of amino alcohols in the presence of a Co/Al2O3 catalyst, compounds of Co+ soluble in the liquid phase and methanol are formed.
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2.
The soluble compounds do not catalyze the process, which is heterogeneous over its entire extent. In the absence of a solid catalyst they break down, apparently playing the role of intermediate compounds.
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3.
As a result of the reaction, a readily oxidized form of Co is produced, capable of dissolving in 0.1 N iodine solution. It was suggested that it is formed as a result of repeated participation of Co in the process of synthesis and decomposition of the complex.
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4.
N-2-Hydroxypropylethylenediamine forms 2-methylpiperazine in the system of pentacyanocobaltate and cobalt acetate,α,α′-dipyridyl, and NaBH4.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 338–344, February, 1974.
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Karpeiskaya, E.I., Kukushkin, Y.N., Trofimov, V.A. et al. Interaction of the catalyst and substrate in the cycloamination of amino alcohols. Russ Chem Bull 23, 307–312 (1974). https://doi.org/10.1007/BF00924675
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DOI: https://doi.org/10.1007/BF00924675