Some common heterocyclic compound, 70478-63-6, name is 4-Bromoisoindoline-1,3-dione, molecular formula is C8H4BrNO2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Product Details of 70478-63-6
Step a. To a solution of 4-bromoisoindoline-l,3-dione (CAS Number 70478-63-6, 15.00 g, 66.4 mmol) in DCM (150 ml) was dropwise added methyl magnesium bromide (1 M in THF) (199 ml, 199 mmol) at 0¡ãC under N2 atmosphere. The reaction mixture was stirred at rt for 2 h. The reaction mixture was combined with three other batches prepared on the same scale by an identical method. The resulting reaction mixture was poured in to NH4C1 solution (500 ml) and extracted with the DCM (3 x 1 L). The combined organic phases was dried over Na2S04, filtered and concentrated under reduced pressure. The crude material was purified by column chromatography (30-32 percent EtOAc in hexane) yielding a mixture of 7-bromo-3-hydroxy-3-methylisoindolin-1-one and 4-bromo-3-hydroxy- 3-methylisoindolin-1-one (37.00 g, 153.6 mmol). LCMS: Method A, 1.435 min, MS: ES+ 242.33, 244.33.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 70478-63-6, its application will become more common.
Reference:
Patent; MISSION THERAPEUTICS LIMITED; GIBSON, Karl Richard; JONES, Alison; KEMP, Mark Ian; MADIN, Andrew; STOCKLEY, Martin Lee; WHITLOCK, Gavin Alistair; WOODROW, Michael D; (241 pag.)WO2017/158388; (2017); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem