Reference of 63927-23-1, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.63927-23-1, Name is 5-Bromo-8-nitroisoquinoline, molecular formula is C9H5BrN2O2. In a article£¬once mentioned of 63927-23-1
A 8-nitro -1, 2, 3, 4-isoquinoline method for the preparation of (by machine translation)
This invention has offered a kind of 8-nitro -1, 2, 3, 4-isoquinoline method for preparing, comprising the following steps: a) isoquinoline and bromizing to the bromination reaction in a strong acid solution, to obtain 5-bromo-isoquinoline; b) the nitrate and step a) the obtained 5-bromo-isoquinoline in the nitration reaction carried out in concentrated sulfuric acid, to obtain 8-nitro-5-bromo-isoquinoline; c) under the conditions of the hydrogen gas, the step b) of 8-nitro-5-bromo-isoquinoline in the solvent under the action of the catalyst to the catalytic hydrogenation Debrominative reaction, to obtain 8-nitro-isoquinoline; d) the step c) of the 8-nitro-isoquinoline with sodium borohydride in acetic acid in the reduction reaction, to obtain 8-nitro -1, 2, 3, 4-isoquinoline. Compared with the prior art, the present invention provides the preparation method of the isoquinoline uses the bromine first 5-C positioning, the subsequent nitration reaction only in 8-C to on, and then sequentially through the catalytic hydrogenation of less impurities are Debrominative and the reduction reaction, the obtained 8-nitro -1, 2, 3, 4-isoquinoline high yield. (by machine translation)
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 63927-23-1
Reference£º
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem