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Paper | Regular issue | Vol 45, No. 1, 1997, pp.29-36
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7511
A Synthesis and Properties of 1-Substituted 1,4,5,6-Tetrahydro-pyrimidines

Bülent Alici, Engin Çetinkaya,* and Bekir Çetinkaya

*Fen-Edebiyat Fakultesi, Inönü University, 44069 Malatya, Turkey


The condensation of 1-substituted 1,3-diaminopropane with N,N-dimethylformamide dimethylacetal gives 1-alkyl- or aryl-1,4,5,6-tetrahydropyrimidines (2) and (3). Alkylation of the tetrahydropyrimidine derivatives with alkyl halides produces the 1,3-dialkyltetrahydropyrimidinium salts (4 and 5). The attempted dehydrogeneration of 2 with sulfur leads to insertion of sulfur on the molecule.