19247-97-3Relevant articles and documents
Unraveling the structure and exciton coupling for multichromophoric merocyanine dye molecules
Koch, Federico,Stolte, Matthias,Zitzler-Kunkel, André,Bialas, David,Steinbacher, Andreas,Brixner, Tobias,Würthner, Frank
, p. 6368 - 6378 (2017)
The relative orientation of chromophores is a key factor in determining the relationship between the structure and the functionality in molecular multichromophore ensembles. In the case of structurally flexible molecular systems in solution, the task to c
Synthesis of 1,4-Dicarbonyl Compounds from Silyl Enol Ethers and Bromocarbonyls, Catalyzed by an Organic Dye under Visible-Light Irradiation with Perfect Selectivity for the Halide Moiety over the Carbonyl Group
Esumi, Naoto,Suzuki, Kensuke,Nishimoto, Yoshihiro,Yasuda, Makoto
supporting information, p. 5704 - 5707 (2016/11/17)
We report the visible-light-induced radical coupling reaction of silyl enol ethers with α-bromocarbonyl compounds to give 1,4-dicarbonyls. The reaction was effectively accelerated using an inexpensive organic dye (eosin Y) as a photoredox catalyst. 1,4-Dicarbonyl compounds alone were afforded, without the generation of carbonyl adducts of the α-halocarbonyls, which are usually generated in the presence of fluoride anions or Lewis acids. A variety of silyl enol ethers, α-bromoketones, α-bromoesters, and α-bromoamides were applied to this system to produce the coupling compounds.
Direct synthesis of α-bromoketones from alkylarenes by aerobic visible light photooxidation
Tada, Norihiro,Ban, Kazunori,Hirashima, Shin-Ichi,Miura, Tsuyoshi,Itoh, Akichika
supporting information; experimental part, p. 4701 - 4704 (2010/11/17)
The direct synthesis of α-bromoketones from alkylarenes by aerobic photooxidation with hydrobromic acid is reported. The key success for this direct oxidative reaction is due to control of bromination with acetic acid and ethanol, which are generated in situ by solvolysis of ethyl acetate in the course of the reaction.