Alkylidenebis (dialky1amines)(enediamines), 1, undergo C-alkylation with alkyl dihalides, X (CHz), X, to give linear diamidinium salts, 2, and cycloalkylamidinium salts, 3. The latter predominate when n= 2, 4, and 5. 1, 3-Diiodopropane (n= 3) and 1 afforded the novel tetrahydropyridinium salt 6 by both C-and N-alkylation. Evidence for N-alkylation with other dihalides is presented. Although alkylation of the simplest bis (enediamine) 16 with ...
