Unexpected domino reaction of 3-alkyl-1,2,4-triazolo[1,5-a]benzimidazoles with butylmagnesium bromide leading to benzimidazolyl guanidines
作者:Yurii V. Koshchienko、Tatyana A. Kuz’menko、Anatolii S. Morkovnik、Mikhail A. Kiskin、Grigorii G. Alexandrov
DOI:10.1016/j.mencom.2016.07.018
日期:2016.7
Reaction of 3-alkyl-1,2,4-triazolo[1,5-a]benzimidazoles with butylmagnesiumbromide follows two hetarylotropic rearrangements to afford 1,2-bis(1H-benzimidazol-2-yl)-1,3-dialkylguanidines and 2-(1’H-1,2’-dibenzimidazol-2-yl)-1,3-dialkylguanidines.