Novel Ring Contraction of 1,2-Diazocine System. Hydrolysis of 7-Substituted 4-Acetoxy- and 4-Phthalimido-3,8-diphenyl-1,2-diazocines Leading to the Formation of Pyrazoles

Article abstract of DOI:10.1246/cl.1987.157

A novel ring contraction of 1,2-diazocine system to pyrazoles via <5.5>bicyclic intermediates has been demonstrated by hydrolysis of 7-substituted 4-acetoxy- and 4-phthalimido-3,8-diphenyl-1,2-diazocines.