607-99-8Relevant articles and documents
Zwitterionic-Salt-Catalyzed Site-Selective Monobromination of Arenes
Xiong, Xiaodong,Tan, Fei,Yeung, Ying-Yeung
, p. 4243 - 4246 (2017/08/23)
A zwitterionic-salt-catalyzed electrophilic monobromination of arenes with high regioselectivity has been developed. Under mild reaction conditions, a wide range of monobrominated aromatic compounds can be obtained in excellent yields. The reaction can be operated using an extremely low catalyst loading (0.05 mol %) with the inexpensive brominating agent N-bromosuccinimide. The versatility of this catalytic protocol has been demonstrated by the scale-up reaction with a 0.01 mol % catalyst loading to provide the selectively halogenated compound in quantitative yield.
New synthesis of hydrangettn and collinin
Maes, Dominick,Vervisch, Stijn,De Kimpe, Norbert
, p. 395 - 415 (2008/02/07)
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POLYBROMINATED AROMATIC COMPOUNDS. IV. METHOXYDEBROMINATION REACTIONS OF POLYBROMOBENZENES IN PYRIDINE
Shishkin, V. N.,Lapin, K. K.,Tanaseichuk, B. S.,Butin, K. P.
, p. 516 - 522 (2007/10/02)
The rates were measured and the orientation was studied for the methoxydebromination of all polybromobenzenes C6HnBr6-n (n = 0-3) in pyridine at 115 deg C.From comparison of the partial rates of substitution of the bromine atom at various positions of the benzene ring it was found that the activating effect of the bromine atom in relation to the point of nucleophilic attack changes in the order o-Br > m-Br > p-Br, and the directing selectivity of the bromine is low (compared with fluorine in the methoxydefluorination of polyfluorobenzenes) and increases with decrease in the number of bromine atoms in the aromatic ring of the substrate.