Photoinduced C−N Bond Cleavage in 2-Azido-1,3-diphenyl-propan-1-one Derivatives: Photorelease of Hydrazoic Acid
作者:Rodney F. Klima、Abhijit V. Jadhav、Pradeep N. D. Singh、Mingxin Chang、Christine Vanos、Jagadis Sankaranarayanan、Mai Vu、Nazarin Ibrahim、Elaine Ross、Shaun McCloskey、Rajesh S. Murthy、Jeanette A. Krause、Bruce S. Ault、Anna D. Gudmundsdóttir
DOI:10.1021/jo070558q
日期:2007.8.1
absorption (λmax = ∼310 nm) due to the formation of radicals 4a and 4b, respectively, which have lifetimes of ∼14 μs at ambient temperature. TD−DFT calculations (B3LYP/6-31+G(d)) reveal that the first and second excitedstates of the triplet ketone (T1K (n,π*) and T2K (π,π*)) in azide 1a are almost degenerate, at ∼74 and 76 kcal/mol above the ground state (S0), respectively. Similarly, azide 1b has T1K