Synthetic Route of 866633-25-2, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 866633-25-2 as follows.
A solution of isopropylmagnesium bromide (2M solution in tetrahydrofuran) (83 ml, 0.166 mol) was added drop-wise to a stirred solution of 2-(trifluoromethoxy)-5-fluoro- 1 -bromobenzene (Preparation 49, 27.6 g, 0.107 mol) in anhydrous tetrahydrofuran (125 ml) at -1O0C under an atmosphere of nitrogen. The resulting mixture was stirred at room temperature for 2 hours. Tri/sopropyl borate (26.1 g, 0.139 mol) was then added drop-wise at -100C and the resulting mixture was stirred at room temperature for 16 hours. Hydrochloric acid (1 N aqueous solution) (100 ml) was added drop-wise at O0C and the mixture stirred at room temperature for 30 minutes. Ethyl acetate (150 ml) was added and the layers were separated, the aqueous layer was further extracted with ethyl acetate (2 x 150 ml). The organic extracts were combined and concentrated in vacuo. The residue was dissolved in potassium hydroxide (10% aqueous solution) (50 ml) and extracted with diethyl ether (2 x 150 ml). The separated aqueous layer was acidified to pH~4 by addition of hydrochloric acid (1 N aqueous solution) (100 ml) and extracted with ethyl acetate (3 x 150 ml). The combined organic extracts were dried over anhydrous Na2SO4, filtered and evaporated in vacuo to give an off white solid. Purification by preparative HPLC gave the title compound as an off white solid (5.82 g, 24%).1HNMR (cfe-DMSO): 7.23-7.32 (m, 3H), 7.53-7.55 (m, 1 H), 8.36 (br s, 1 H).MS m/z 223 [MH]-
According to the analysis of related databases, 866633-25-2, the application of this compound in the production field has become more and more popular.
Reference:
Patent; PFIZER LIMITED; WO2008/135826; (2008); A2;,
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