Hydrocyanation and Hydrogenation of Acetylenes catalysed by Cyanocobaltates

DOI: 10.1039/P29830001915

Source and publish data:

Journal of the Chemical Society. Perkin transactions II p. 1915 - 1918 (1983)

Update date:2022-08-04

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Authors:

Funabiki, Takuzo

Yamazaki, Yasuyuki

Sato, Yoshihiro

Yoshida, Satohiro

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Article abstract of DOI:10.1039/P29830001915

Acetylenes are regioselectively hydrocyanated by cyanocobaltate prepared at CN:Co < 5:1 to give saturated secondary nitriles via unsaturated nitriles without the use of hydrogen cyanide, and partly hydrogenated to olefins or saturated hydrocarbons.In the presence of 2,2'-bipyridyl, hydrogenation of acetylene predominates, reflecting the formation of a highly active hydride complex ^-.The preliminary formation of a ^3- complex is assumed to explain the fact that the complex is active only at CN:Co < 5:1.Hydrocyanation is explained by the reductive coupling of the vinyl and cyano ligands of ^3- which is formed by the reaction of the ?-acetylene complex, rather than acetylene itself, with ^3-.

Full text of DOI:10.1039/P29830001915

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