Modulation of Spectrokinetic Properties of o??Quinonoid Reactive Intermediates by Electronic Factors: Time??Resolved Laser Flash and Steady??State Photolysis …

…, AL Koner, S Samanta, A Roy, WM Nau

Index: Moorthy, Jarugu Narasimha; Koner, Apurba L.; Samanta, Subhas; Roy, Ankur; Nau, Werner M. Chemistry - A European Journal, 2009 , vol. 15, # 17 p. 4289 - 4300

Full Text: HTML

Citation Number: 23

Abstract

Abstract A variety of differently substituted 6-and 7-arylchromenes such as that depicted undergo photoinduced C [BOND] O bond cleavage to yield colored o-quinonoid intermediates. A combined analysis of μs–ms (laser flash) and real-time kinetic data show that the o-quinonoid intermediates decay faster when the C2-aryl and C6-/C7-aryl rings contain electron-donating and electron-accepting groups, respectively. Similarly, the ...