Electric Literature of 13674-16-3, 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 13674-16-3 as follows.
2-{4′-[5-Methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-yl]-biphenyl-4-yloxy}-3-phenyl-propionic Acid Diisopropyl azodicarboxylate (0.42 mL, 2.52 mmol) in benzene (10 mL) was added dropwise into a cold (0 C.) mixture of 4′-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-yl]-biphenyl-4-ol (0.5 g, 1.26 mmol), 3-phenyllactic acid methyl ester (0.45 g, 2.52 mmol), triphenylphosphine (0.66 g, 2.52 mmol), and benzene (20 mL). The reaction mixture was stirred at room temperature for 30 minutes, poured into water, and extracted with ethyl ether. The organic extracts were dried over MgSO4. Evaporation gave a yellow oil (0.6 g). This residue was taken in methyl alcohol (15 mL) and tetrahydrofuran (15 mL) and treated with sodium hydroxide (2 N, 3.0 mL). The reaction mixture was stirred for 30 minutes, poured into water, acidified with HCl (2 N), and extracted with ethyl ether. The organic extracts were dried over MgSO4. Evaporation and crystallization from ethyl ether/hexanes gave a white solid (0.38 g, 55% yield): mp 183-184; MS m/e 544 (M+H)+; Analysis for: C32H24F3NO4Calc’d: C, 70.71; H, 4.45; N, 2.58 Found: C, 70.50; H, 4.32; N, 2.53.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,13674-16-3, its application will become more common.
Reference:
Patent; Wyeth; US6699896; (2004); B1;,
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