Adding a certain compound to certain chemical reactions, such as: 27492-84-8, name is Methyl 4-amino-2-methoxybenzoate, belongs to esters-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 27492-84-8, Product Details of 27492-84-8
Step c) 4-[(Biphenyl-2-carbonyl)-amino]-2-methoxy-benzoic acid methyl ester Into a refluxing solution of 2-biphenylcarboxylic acid (9.2 g, 46 mmol) in dichloromethane was added dimethylformamide (0.1 ml, 1.4 mmol) and then neat oxalyl chloride (8.1 ml, 92 mmol) via syringe. The reaction was refluxed for 10 minutes, then the volatiles removed in vacuo. The residue was redissolved in dichloromethane, concentrated and dried under high vacuum for 15 minutes. The acid chloride was dissolved in dichloromethane (50 ml) and added into a 0° C. solution of 4-amino-2-methoxy-benzoic acid methyl ester (8.4 g, 46 mmol), diisopropyl ethylamine (10.5 ml, 60 mmol) and dichloromethane (200 ml). The reaction was warmed to room temperature and stirred for 16 hours. The reaction was diluted with dichloromethane, washed with water, (1N) sodium hydroxide (1) hydrochloric acid, and brine, and dried (MgSO4). Evaporation gave a yellow foam, which was crystallized from methanol to give a light yellow solid (16.08 g) m.p. 141-142° C. Analysis for: C22 H19 N O4 Calcd: C, 73.12; H, 5.30; N, 3.88. Found: C, 72.93; H, 5.20; N, 3.83.
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Reference:
Patent; American Home Products Corporation; US5880122; (1999); A;,
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