Synthetic Route of 52189-63-6,Some common heterocyclic compound, 52189-63-6, name is 1-Fluoro-3,5-dimethoxybenzene, molecular formula is C8H9FO2, 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.
Example 53 3- {4- [3-Fluoro-5- (2-phenoxy-4-trifluoromethyl-phenoxy)-phenoxy]-2-methyl-phenyl}- propionic acid Step A 3-Fluoro-5-methoxy-phenol A-78 C solution of l-fluoro-3, 5-dimethoxybenzene (4. 98 g, 31.9 mmol) in dry CH2C12 (50 mL) is treated with a 1 M CH2C12 solution of boron tribromide (128 mL, 128 mmol), and the mixture is warmed to 0 C and stirred under N2. Upon completion, the mixture is poured into ice water and extracted with Et2O. The organic layer is dried (Na2S04), and the solvent is removed in vacuo to afford crude product that is absorbed on silica gel and purified by flash chromatography using a gradient of 5/1 to 1/1 to hexanes/ethyl acetate to afford 2.40 g (53%) of the title compound. Rf= 0.49 (1/1 hexanes/EtOAc).’H NMR (400 MHz, CDCl3). MS (ES-) m/z mass calculated for C7H702F 142, found 141 (M-1,100%).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Fluoro-3,5-dimethoxybenzene, its application will become more common.
Reference:
Patent; ELI LILLY AND COMPANY; WO2005/37763; (2005); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem