Active Metals from Potassium-Graphite. Highly Dispersed Nickel on Graphite as a New Catalyst for the Stereospecific Semihydrogenation of Alkynes

DOI: 10.1021/jo00339a016

Source and publish data:

Journal of Organic Chemistry p. 5340 - 5343 (1981)

Update date:2022-08-30

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Authors:

Savoia, Diego

Tagliavini, Emilio

Trombini, Claudio

Umani-Ronchi, Achille

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Article abstract of DOI:10.1021/jo00339a016

The reduction of NiBr2*2DME by means of potassium-graphite affords highly dispersed nickel on the graphite surface (Ni-Gr1).Freshly prepared Ni-Gr1 is used "in situ" as a catalyst for semihydrogenation of alkynes to alkenes in the presence of ethylenediamine as catalyst modifier.Unconjugated and conjugated (Z)-alkenes with a stereospecificity of 96-99percent and 94percent, respectively, are obtained.

Full text of DOI:10.1021/jo00339a016

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