Photoinduced regioselective arylation of N-vinyllactams and methylthiazoles by tetrachlorophthalimides was written by Shen, Yong-Miao;Grampp, Guenter;Tao, Fei-Fei;He, Ning-De;Chen, Da-Qing;Ye, Miao. And the article was included in Journal of Photochemistry and Photobiology, A: Chemistry in 2013.Electric Literature of C8HBr4NO2 This article mentions the following:
Photoinduced reactions of 4,5,6,7-tetrahalophthalimides (1a-1h) with selected N-vinyllactams (N-vinylpyrrolidinone, N-vinylcaprolactam) and methylthiazoles resp. lead to dehydrohalogenative coupling reactions between the phthalimide and these heterocycles. These mild and metal-free coupling reactions result in regioselective and stereoselective arylation of the heterocycles by the phthalimide, with the Z-isomer as the main products. Reaction mechanism for the photo-reactions is discussed. In the experiment, the researchers used many compounds, for example, 4,5,6,7-Tetrabromoisoindoline-1,3-dione (cas: 24407-32-7Electric Literature of C8HBr4NO2).
4,5,6,7-Tetrabromoisoindoline-1,3-dione (cas: 24407-32-7) belongs to indole derivatives. Indole, first isolated in 1866, and it is commonly synthesized from phenylhydrazine and pyruvic acid, although several other procedures have been discovered. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.Electric Literature of C8HBr4NO2
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles