Benzimidazolo-diazepines from 1,3-dienes and arenediazocyanides through a 1,3,4-tri-aza-Cope rerrangement

Article abstract of DOI:10.1016/S0040-4020(01)89022-0

Cyclic and bicyclic 1-cyano-2-arylhydrazines were prepared from arene diazocyanides and 1,3-dienes. Some of them rearrange at room temperature through a 1,3,4-tri-aza-Cope rearrangement, followed by an intramolecular cyclisation, to afford benzimidazolo-d