Adding a certain compound to certain chemical reactions, such as: 20059-73-8, name is 2-(4-(Aminomethyl)phenoxy)-N,N-dimethylethanamine, 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 20059-73-8, 20059-73-8
EXAMPLE 6 N-[4-[2-(Dimethylamino)ethoxy]benzyl]-2-methoxy-5-sulfamoylbenzamide To a cooled suspension of 14.3 g of 2-methoxy-5-sulfamoylbenzoic acid in 60 ml of tetrahydrofuran were successively added dropwise 6.25 g of triethylamine and 7.45 g of pivaloyl chloride with stirring. The mixture was stirred at the same temperature for 1 hour and then a solution of 10.0 g of 4-[2-(dimethylamino)ethoxy]-benzylamine in 40 ml of tetrahydrofuran was added dropwise with stirring. The mixture was stirred at room temperature for 14 hours and the solvent was evaporated. Hydrochloric acid (10%) was added to the residue and the aqueous solution was washed with ethyl acetate. The aqueous layer was made alkaline with potassium carbonate to give a precipitate, which was washed with water and ethyl acetate, of 16.6 g of colorless crystals. Recrystallization of the crystals from ethanol gave the title compound as colorless needles, m.p. 154-155 C. Analysis for C19 H25 N3 O5 S: Calculated %: C, 56.00; H, 6.18; N, 10.31. Found %: C, 55.71; H, 6.21; N, 10.02.
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Reference:
Patent; Hokuriku Pharmaceutical Co., Ltd.; US4983633; (1991); A;,
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