A pentacene intermediate via formal intramolecular photoredox of a 6,13-pentacenequinone in aqueous solution
作者:Yunyan Hou、Peter Wan
DOI:10.1139/v07-117
日期:2007.12.1
photolysis of 4 in acidic aqueous solution (pH < 3) resulted in a clean intramolecular photoredox reaction, via an enol intermediate, to give 10 (green compound; Φ ~ 0.2 at pH 1), which was too reactive for isolation or trapping by standard ArOH trapping agents such as aceticanhydride. These reactions may be viewed as a one-way photochemical intramolecular “redox switch” from quinone to hydroquinone