As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 117977-21-6, name is 2-[[[4-(3-Methoxypropoxy)-3-methylpyridine-2-yl ]methyl]thio]-1H-benzimidazole, molecular formula is C18H21N3O2S, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. COA of Formula: C18H21N3O2S
50 g of 2-[4-(3-methoxy propoxy-3-methylpyridine-2-yl) methyl thio]- lH-benzimidazole was taken in 100 ml acetonitrile. To this mixture 185.2 g (0.95mol) sodium hypochlorite was added drop wise between 0-50C in a nitrogen atmosphere and the obtained mixture was stirred at 0-50C for 30 minutes. After completion of reaction, the pH of reaction mixture was adjusted to 9.0 by using 5 % acetic acid. The mixture was extracted with methylene dichloride, and the extract was dried over sodium sulfate and filtered. The filtrate was concentrated under reduced pressure and dried under vacuum. The obtained residue was dissolved in 20 ml of methylene dichloride followed by t-butyl methyl ether to get the clear solution. Stir the mass for one hour at room temperature to get the precipitate. Filtered the precipitated product and washed with 100 ml of t-butyl methyl ether. Dry the product at 600C under vacuum to obtain title compound 41 g (78.25%) as off white solid
With the rapid development of chemical substances, we look forward to future research findings about 117977-21-6.
Reference:
Patent; IPCA LABORATORIES LIMITED; WO2009/116072; (2009); A2;,
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