作者:Ranaweera A. A. Upul Ranaweera、Jagadis Sankaranarayanan、Lydia Casey、Bruce S. Ault、Anna D. Gudmundsdottir
DOI:10.1021/jo201304c
日期:2011.10.21
Photolysis of 1 in chloroform yielded 2 as the major product and a small quantity of 3. Laser flash photolysis demonstrated that upon irradiation, the first excited triplet state of the ketone (T1K) of 1 is formed and decayed to form radical 4, which has a λmax at 380 nm (τ = 2 μs). Radical 4 expelled a nitrogen molecule to yield imine radical 5 (λmax at 300 nm). Density functional theory (DFT) calculations
在氯仿中1的光解产生2作为主要产物,少量3产生。激光闪光光解表明在照射时,该酮的第一激发三重态(T 1K的)1形成并衰减到形成自由基4,其具有λ最大在380nm处(τ= 2微秒)。自由基4排出氮分子以产生亚胺基5(在300nm处的λmax)。密度泛函理论(DFT)计算表明,形成5的过渡态势垒约为4 kcal / mol。相比之下,1的光解在氩气基质中生成三重态氮6,进一步用15 N和D同位素标记以及DFT计算对其进行了表征。长时间辐照6会产生三重亚胺亚硝基7。