Abstract
Adducts from benzotriazole, an aldehyde, and formamide are dehydrated to α-(benzotriazol-1 -yl)alkyl isocyanides which readily add to secondary amines to form
N
′-(benzotriazol-1-ylalkyl)-
N
,
N
-dialkylformamidines. The benzotriazolyl group in the latter is displaced by Grignard reagents to yield the corresponding unsymmetrical formamidines.