Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 6911-87-1, name is 4-Bromo-N-methylaniline, A new synthetic method of this compound is introduced below., Recommanded Product: 6911-87-1
Weigh BTC (58mg, 0.2mmol) in a 25mL two-neck bottle.Add 5 mL of anhydrous dichloromethane, magnetically stir, add equivalents of N-methyl-p-bromoaniline, triethylamine (0.25 mmol) and 5 mL of dichloromethane to a 25 mL constant pressure dropping funnel.Under ice bath, slowly add dropwise. After the addition, the ice salt bath was removed and stirred at room temperature for 4 h.HZA (40 mg, 0.1 mmol) was added to a 10 ml vial, and traces of DMAP, 5 mL of dichloromethane were added, and magnetically stirred at room temperature until completely dissolved.The solution was slowly added dropwise to the reaction liquid in the above step under an ice salt bath.At the end of the addition, the ice salt bath was removed and stirred at room temperature. After the reaction is completed, 3 to 6 times the volume of the reaction liquid is added to the above reaction liquid, and the mixture is extracted with ethyl acetate for 3-5 times. The organic layer is combined, washed with a saturated NaCI solution, dried over anhydrous Na2SO?Concentrate the crude product as a yellow oil, then the crude product was taken from petroleum ether:Ethyl acetate with a volume ratio of 20:1 mixed solvent elution, thin layer detection,Collecting an eluent that is strongly UV at 254 nm and less polar than HZA,The combined eluate and the product obtained by evaporating the solvent under reduced pressure are dried to obtain HZAM-17.The yield was 93%.
The synthetic route of 6911-87-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Zhejiang University of Technology; Zhan Zhajun; Shan Weiguang; Chen Yan; Shu Renhuan; Wang Jianwei; Ma Liefeng; (31 pag.)CN109956952; (2019); A;,
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