36107-01-4Relevant articles and documents
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Price,Guthrie
, p. 1592 (1946)
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Palladium-Catalyzed Electrochemical C-H Bromination Using NH4Br as the Brominating Reagent
Yang, Qi-Liang,Wang, Xiang-Yang,Wang, Tong-Lin,Yang, Xiang,Liu, Dong,Tong, Xiaofeng,Wu, Xin-Yan,Mei, Tian-Sheng
supporting information, p. 2645 - 2649 (2019/04/17)
The palladium-catalyzed electrochemical C-H bromination of benzamide derivatives under divided cells is developed, in which NH4Br serves as a brominating reagent and electrolyte. The protocol avoids the use of chemical oxidants and provides an alternative method for the synthesis of aryl bromides.
A general method for the metal-free, regioselective, remote C-H halogenation of 8-substituted quinolines
Motati, Damoder Reddy,Uredi, Dilipkumar,Watkins, E. Blake
, p. 1782 - 1788 (2018/02/23)
An operationally simple and metal-free protocol for geometrically inaccessible C5-H halogenation of a range of 8-substituted quinoline derivatives has been established. The reaction proceeds under air, with inexpensive and atom economical trihaloisocyanuric acid as a halogen source (only 0.36 equiv.), at room temperature. Exceptionally high generality with respect to quinoline is observed, and in most instances, the reaction proceeded with complete regioselectivity. Quinoline with a variety of substituents at the 8-position gave, exclusively, the C5-halogenated product in good to excellent yields. Phosphoramidates, tertiary amides, N-alkyl/N,N-dialkyl, and urea derivatives of quinolin-8-amine as well as alkoxy quinolines were halogenated at the C5-position via remote functionalization for the first time. This methodology provides a highly economical route to halogenated quinolines with excellent functional group tolerance, thus providing a good complement to existing remote functionalization methods of quinolin-8-amide derivatives and broadening the field of remote functionalization. The utility of the method is further showcased through the synthesis of several compounds of biological and pharmaceutical interest.