Conclusions
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1.
The cyanoamine complexes of cobalt catalyze under mild conditions the selective hydrogenation of dienones to unsaturated ketones.
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2.
Hydrogen adds to crotonolideneacetone predominantly at the C=C bond adjacent to the carbonyl group. The amount of formed 5-hepten-2-one in the catalyzate reaches 85%.
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3.
In contrast to pentacyanocobaltate, the cyanoamine complexes of cobalt catalyze the isomerizatton of 5-hepten-2-one to 4-hepten-2-one and 3-hepten-2-one.
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Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2808–2811, December, 1977.
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Gvinter, L.I., Freidlin, L.K. & Suvorova, L.N. Hydrogenation of dienones in presence of cyanoamine complexes of cobalt. Russ Chem Bull 26, 2599–2601 (1977). https://doi.org/10.1007/BF00924580
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DOI: https://doi.org/10.1007/BF00924580