Photoaccelerated Synthesis of ٢-Vinylpyridines from Unsaturated Nitriles and Ethyne


Abstract in English

The heterocyclization of unsaturated nitriles and ethyne catalyzed by cyclopentadienyl - ١،٥ - cis, cis-cyclooctadiene-cobalt (I) and promoted by light has been studied in toluene as solvent. Acrylonitrile and substituted acrylonitriles gave satisfying results interesting for the preparation of ٢-vinylpyridines. No reaction was observed using fumaronitrile, maleonitrile and allycyanides. (E)/(Z)-ratio of reactants and products seems not to be influenced within the reaction.

References used

Y. Wakatsuki and H. Yamazaki. ١٩٧٦. Synthesis ٢٦
W. Schulz, H. Pracejus and G. Oehme. ١٩٨٩. Tetrahedron Lett. ٣٠, ١٢٢٩
B. Heller and G. Oehme, J. Chem. ١٩٩٥. Soc, Chemical Communication, ١٧٩

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