Conclusions
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1.
During the catalytic synthesis of piperazine from monoethanolamine in the presence of Co/Al2O3, complex compounds are formed.
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2.
The product isolated as a result of treatment of the catalyst after the reaction represents a complex of Co3+ with various amines contained in the reaction mixture.
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3.
A scheme was proposed for the formation of piperazine from monoethanolamine on the catalyst Co/Al2O3; the individual steps of the catalytic process were described in the terms of coordination chemistry.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2716–2722, December, 1970.
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Karpeiskaya, E.I., Gorshkova, L.S. The formation of complex compounds during the catalytic cycloamination of monoethanolamine. Russ Chem Bull 19, 2556–2560 (1970). https://doi.org/10.1007/BF00854908
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DOI: https://doi.org/10.1007/BF00854908