Abstract 2, 6-Dichloro-3, 5-diformyl-4, 4-dimethyl-1, 4-dihydropyridines IIb-IId have been prepared by the Vilsmeier-Haack reaction of glutarimides I, and possible chemical transformations of the trimethyl derivative IIc have been examined. The bis-oxime IVa and bis-(2, 4-dinitrophenylhydrazone) Vb are formed by the respective reactions of the formyl groups. The nucleophilic substitutions of chlorine give the corresponding derivatives IX-XII ...
