Abstract
The catalytid hydrogenation of a variety of organic substrates may be effected by pentacyanocobaltate(II) anion in aqueous solution (1). A general requirement for the reduction of the carbon-carbon double bond is the presence of conjugation; thus, conjugated dienes are reduced to the monoolefin stage. A further requirement fappears to be the ability or the diene to attain a “cisoid” conformation (2). For example, 2, 5-dimethyl-2, 4-hexadiene, in which the cisoid conformation is sterically hindered, is not reduced, while bicyclo - [2,2,1]heptadiene, in which a cisoid conformation is fixed, is reduced, although its resonance stabilization in the ground state is considered to be negligible (3).
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Kwiatek, J., Seyler, J.K. (1964). Catalytic Hydrogenation by Pentacyanocobaltate(II): π- and σ- Allylic Complex Intermediates. In: Gutmann, V. (eds) Proceedings of the 8th International Conference on Coordination Chemistry. Springer, Vienna. https://doi.org/10.1007/978-3-7091-3650-8_117
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DOI: https://doi.org/10.1007/978-3-7091-3650-8_117
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