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Communication | Regular issue | Vol 3, No. 3, 1975, pp.187-191
Published online, 1st January, 1970
DOI: 10.3987/R-1975-03-0187
Reaction of 5-Acetonyl-6-chloropyrimidines with Hydrazines and Diamines

Heinz Wolfers, Udo Kraatz, and Friedheim Korte*

*Lehrstuhl für Ökologische Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany


The reaction of 5-acetonyl-6-chloro-4-ethyl-2-phenylpyrimidine (4) with hydrazines yields dihydropyrimido[4,5-c]pyridazines, while l,2-diamines give pyrrolo[2,3-d]pyrimidines and no pyrimido[4,5-e]-l, 4-diazocines. Only l,2-dimethylaminoethane reacts with 4 to give the pyrimido[4,5-e]-1,4-diazocine-system.