Photolysis of 1,2,4,5-Benzenetetracarboxylic Dianhydride in a Low-Temperature Argon Matrix. Direct Observation of Reactive Intermediates Stepwise Produced

Article abstract of DOI:10.1246/cl.1995.557

Irradiation of 1,2,4,5-benzenetetracarboxylic dianhydride produced stepwise a cyclopropenone and benzyne intermediates with the release of CO2 and CO in a low-temperature argon matrix.In the final stage the further extrusion of CO2 and CO gave 1,3,5-hexatriyne which was a potential product in the ring-opening reaction of benzdiyne.