Name: [Ir(dtbbpy)(ppy)2]PF6. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: [Ir(dtbbpy)(ppy)2]PF6, is researched, Molecular C40H40F6IrN4P, CAS is 676525-77-2, about Spin-Selective Generation of Triplet Nitrenes: Olefin Aziridination through Visible-Light Photosensitization of Azidoformates. Author is Scholz, Spencer O.; Farney, Elliot P.; Kim, Sangyun; Bates, Desiree M.; Yoon, Tehshik P..
Azidoformates are interesting potential nitrene precursors, but their direct photochem. activation can result in competitive formation of aziridination and allylic amination products. Herein, the authors show that visible-light-activated transition-metal complexes can be triplet sensitizers that selectively produce aziridines through the spin-selective photogeneration of triplet nitrenes from azidoformates. This approach enables the aziridination of a wide range of alkenes and the formal oxyamination of enol ethers using the alkene as the limiting reagent. Preparative-scale aziridination can be easily achieved under continuous-flow conditions. Under optimized conditions the synthesis of the target compounds was achieved using [4,4′-bis(1,1-dimethylethyl)-2,2′-bipyridine-κN1,κN1′]bis[2-(2-pyridinyl-κN)phenyl-κC]iridium(1+) hexafluorophosphate(1-) as a catalyst. Starting materials included (azido)formic acid 2-chloroethyl ester (i.e., azidoformate) and alkenes, such as cyclohexene, cyclopentene, cycloheptene, (ethenyl)benzene (i.e., styrene). The title compounds thus formed included 7-Azabicyclo[4.1.0]heptane-7-carboxylic acid 2,2,2-trichloroethyl ester derivatives (i.e., aziridine derivatives). Reaction products from 1,1′-[(1α,2α,3β)-3-ethenyl-1,2-cyclopropanediyl]bis[benzene], (4E)-4-octene, (4Z)-4-octene with (azido)formic acid 2-chloroethyl ester were also reported.
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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”