In contrast to 1-amino- and 1-alkylaminobenzimidazoles, 1-di-alkylaminobenzimidazoles are metallated by n-butyl-lithium in absolute ether at the 2-position.The subsequent treatment of the lithium derivatives by electrophilic reagents, in which role benzop
Kuz'menko, V. V.,Filatova, I. A.,Pozharskii, A. F.