Synthetic Route of 57486-69-8,Some common heterocyclic compound, 57486-69-8, name is Methyl 2-(2-bromophenyl)acetate, molecular formula is C9H9BrO2, 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.
General procedure: To a 2-5 mL capacity microwave vial was charged methyl 2-(2-bromophenyl)acetate (0.100g, 0.43 mmol), 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (0.115 g, 0.523 mmol)and cesium carbonate (0.280 g, 0.86 mmol) in anhydrous 1,2-dimethoxy ethane (4 mL). Themixture was stirred and degassed with argon for 5 min. To this mixture was added Pd(PPh3)4(25 mg, 0.021 mmol) under argon atmosphere, and purged for 2 min. The tube was sealedand irradiated in microwave at 125 C for 0.5 h (This is the internal temperature of reactionmixture and monitored on the screen through a sensor). The vial was cooled to 0C over aperiod of 15 min, followed by addition of 1M potassium tert-butoxide (0.65 mL, 0.65 mmol)solution in THF. The resulting mixture was stirred for 10 minutes and quenched withsaturated ammonium chloride solution. The mixture was diluted with ethyl acetate (30 mL)and washed with water and brine. The organic layer was dried over anhydrous sodiumsulfate, filtered and concentrated. The residue obtained was purified by flash columnchromatography by eluting with gradient of 2-20% ethyl acetate in hexane to afford the 5Hdibenzo[b,d]azepin-6(7H)-one (4) as off white solid (0.075 g, 82%).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Methyl 2-(2-bromophenyl)acetate, its application will become more common.
Reference:
Article; Deb, Prasant K.; Sharma, Somesh; Borude, Avinash; Singh, Ravi P.; Kumar, Deepak; Reddy, L. Krishnakanth; Tetrahedron Letters; vol. 54; 23; (2013); p. 2916 – 2919;,
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