Adding a certain compound to certain chemical reactions, such as: 39538-68-6, name is 2-Methoxy-4-methylaniline, belongs to ethers-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 39538-68-6, Recommanded Product: 2-Methoxy-4-methylaniline
Intermediate 43Preparation of 1-bromo-2-methoxy-4-methylbenzeneTo a solution of copper(II)bromide (6.35 g; 28.4 mmol) in acetonitrile (25 mL) was added tert-butyl nitrite (2.85 ml; 24.06 mmol) and the mixture was heated at 65 C. under nitrogen atmosphere. A solution of 2-methoxy-4-methylaniline (3 g, 21.87 mmol) in 25 ml acetonitrile was added carefully and the mixture was stirred for 20 min at 65 C. The solvent was removed under reduced pressure, the residue was dissolved in ethyl acetate and washed with a 5% solution of ammonia, water, a solution of EDTA, water and brine. The organic layer was dried over sodium sulphate, filtered and concentrated under reduced pressure. Purification by flash chromatography on silica gel using a gradient of ethyl acetate (2-50%) in heptane furnished 2.32 g (53%) of the title compound. 1H-NMR (300 MHz, CDCl3) (ppm) delta: 6.63-6.60 (m, 3H, 3×Harom.); 3.82 (s, 3H, OCH3); 2.26 (s, 3H, CH3).
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