Synthesis and Characterization of New Derivatives of 1,4-Diazepinium Salts

Abstract

Novel 6-aryl-1,4-diazepinium and 3-aryl-hexahydro-1H-benzo-[b-1,4]-diazepinium salts (with aryl and heteroaryl = 1-quinilinio, 3,5-dimethylpyridinio, 4-phenyl phenyl, 3,4,5-trimethoxyphenyl, and 1,4-phenylene) were synthesized mostly by reactions of 1,2-diamines with 3-aryl and 3-heteroaryl-1,5-diazapentadienium salts. The ultraviolet spectral behavior of these compounds was examined in acetonitrile. Elemental analysis, infrared, ¹H NMR, ¹³C NMR, and mass spectra confirmed the molecular structure of the newly synthesized compounds.

Keywords:

• 3-Aryl-hexahydro-1H-benzo-[b-1,4]-diazepinium salts
• 3-arylvinamidinium salts
• 6-aryl-2,3-dihydro-1,4-diazepinium salts
• Vilsmeier reaction

ACKNOWLEDGMENT

Financial support of this work by the Research Council of the Persian Gulf University is gratefully acknowledged.