With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.31785-05-4,Ethyl 5-amino-2-methylthiazole-4-carboxylate,as a common compound, the synthetic route is as follows.
B) A microwave vial was charged with 5-amino-2-methyl-thiazole-4-carboxylic acid ethyl ester (0.300 g, 1.61 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (Xantphos) (0.28 g, 0.48 mmol) and palladium dibenzylideneacetone (Pd2dba3)-chloroform complex (0.17 g, 0.16 mmol). Degassed dioxane (15.00 ml) was added, followed by 3-bromobenzenesulfonamide (0.38 g, 1.61 mmol) and cesium carbonate (0.93 g, 2.87 mmol) The vial was then irradiated in a microwave oven at 150 C. for 15 min. The mixture was diluted with THF and the solids filtered, washing with THF. The filtrate was evaporated and the residue purified by flash chromatography (heptane ethyl acetate) to yield 2-methyl-5-(3-sulfamoyl-phenylamino)-thiazole-4-carboxylic acid ethyl ester (0.13 g, 24%) as an off-white solid
31785-05-4, As the paragraph descriping shows that 31785-05-4 is playing an increasingly important role.
Reference：
Patent; Buettelmann, Bernd; Ceccarelli, Simona Maria; Jaeschke, Georg; Kolczewski, Sabine; Porter, Richard Hugh Philip; Vieira, Eric; US2006/160857; (2006); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica