期刊
SYNTHESIS-STUTTGART
卷 -, 期 3, 页码 395-398出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0028-1083316
关键词
alkyne; cobalt; Glaser coupling; oxidation; diynes
The cobalt-catalysed Glaser-type coupling of terminal alkynes was achieved utilising nitrobenzene as a stoichiometric oxidising agent under reductive conditions. The proposed electron transfer from zinc powder to a nitrobenzene coordinated to the cobalt centre initiates the Coupling of the coordinated alkynes. Other aryl-, alkenyl-, alkyl-, and silylacetylenes besides phenylacetylene could also be coupled to generate the 1,3-diynes in moderate to very good yields.
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