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 butylmagnesium bromide 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.
3-烷基-1,2,4-三唑并[1,5-a]苯并咪唑与丁基溴化镁的反应遵循两个多核重排反应,得到1,2-双(1H-苯并咪唑-2-基)-1,3-二烷基胍和2-(1'H-1,2'-二苯并咪唑-2-基)-1,3-二烷基胍。