Cobalt-Catalyzed Alkyne−Nitrile Cyclotrimerization To Form Pyridines in Aqueous Solution
作者:Anson W. Fatland、Bruce E. Eaton
DOI:10.1021/ol006327m
日期:2000.10.1
A new, water-soluble cobalt(I) catalyst has been used in the aqueous, chemospecific, cyclotrimerization of one nitrile with two alkynes for the synthesis of highly functionalized pyridines. Several different functional groups are well incorporated in this transformation, including unprotected alcohols, ketones, and amines. Double isotopic crossover data, as well as nitrile dependence on the rate of