With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.14190-59-1,Thiazole-2-carboxylic acid,as a common compound, the synthetic route is as follows.
Benzoic aldehyde (25mmol) was added to the 25percent ammonia water solution (20mL) containing potassium cyanide (KCN) (30mmol) and ammonium chloride (37.5mmol). The resulted mixture was stirred for 56 hours, and the reaction was tracked by TLC. The reactant was extracted with dichloromethane. Then the extract was dried over magnesium sulphate (MgSO4), and the solvent was concentrated to obtain compound 9 (2.9g, yield 90percent). Compound 9 (6mmol) was mixed with EDC (7.8mmol), DMAP (0.6mmol) and thiazole-2-formic acid (6mmol). The resulted mixture was cooled under ice bath (0°C), subsequently DMF was added thereto (15mL). The progress of reaction was tracked by TLC. After the reaction was completed, the reactant was diluted with water, and extracted with ethyl acetate. The solvent was removed completely by concentration, and compound 10 was obtained by separation through column chromatograph (0.76g, yield 50). Compound 10 (3.1mmol) was mixed with triphenylphosphine (Ph3P) (7.75mmol) and carbon tetrachloride (CCl4) (7.75mmol), and the resulted mixture was dissolved in acetonitrile (20mL). The reaction was conducted at 45°C and tracked by TLC. After the reaction was completed, the solvent was removed by concentration, and compound 11 (Wang261) (yield 60percent) was obtained by separation through column chromatograph with petroleum ether/ ethyl acetate (volume ratio 5:1)., 14190-59-1
The synthetic route of 14190-59-1 has been constantly updated, and we look forward to future research findings.
Reference：
Patent; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; EP1889843; (2008); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica