Synthesis and X-ray analysis of new 1,5-Benzodiazepinium picrates

摘要

1,2-Diaminobenzenes react withpentane-2,4-dione in ethanol in the presence of picric acid t give 1,5-benzodiazepinium picrates.In the single crystal,the benzodiazepinium moleucles form layers with overlapped 7-membered rings in head-to-tail arrangement.Hydrogen bonds to the picrate connect the 1,5-benzodiazepinium moleucles of two layers.