1046817-97-3Relevant articles and documents
Efficient activation of 2-iminomethylpyridine/cobalt-based alkyne [2+2+2] cycloaddition catalyst by addition of a silver salt
Goswami, Avijit,Ito, Taichi,Okamoto, Sentaro
, p. 2368 - 2374 (2008/09/19)
The addition of silver triflate (AgOTf) or silver hexafluoroantimonate (AgSbF6) significantly increased the activity of the 2-(arylimino)methylpyridine/cobalt(II) chloride hexahydrate (CoCl 2·6O H2O)/zinc catalyst in alkyne cyclotrimerizations thereby accelerating the reaction and enabling the use of unactivated, simple internal alkynes as the monoyne substrate : The rate of reaction was found to be highly dependent on the nature of the counter anion (X-) and the ligand (L) in the postulated cationic cobalt(I) complex [LCo(I)]+X-.