Electric Literature of 67442-07-3, 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 67442-07-3 as follows.
To a THF solution of (S)-1-bromo-2-methyloxy-3-(1-methyloxyheptyl)benzene (9, 12.5 g) obatined in the second step was added dropwise a 2M isopropyl magnesium chloride THF solution (44 mL) under ice-cooling. After the reaction solution was stirred at 45°C for 3 hours, N-methyloxy-N-methyl-2-chloroacetamide(10, 3.5 g) was added under ice-cooling, and the mixture was stirred at room temperature for 1 hour. The reaction solution was extracted with ethyl acetate, and purified by silica gel chromatography to obtain (S)-2-chloro-1-(2-methyloxy-3-(1-methyloxyheptyl)phenyl)ethanone (11). NMR (CDCl3) delta ppm: 0.87 (3H, t, J = 6.8 Hz), 1.2 – 1.82 (10H, m), 3.22 (3H, s), 3.78 (3H, s), 4.53 (1H, m), 4.73 (2H, m), 7.24 (1H, t, J = 7.6Hz), 7.52 (1H, dd, J = 7.6 Hz, J = 1.8 Hz), 7.60 (1H, dd, J = 7.7 Hz, J = 1.8Hz)
According to the analysis of related databases, 67442-07-3, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Shionogi&Co., Ltd.; EP2184279; (2010); A1;,
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