{"id":4105,"date":"2021-05-17T04:34:52","date_gmt":"2021-05-16T20:34:52","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=4105"},"modified":"2021-05-17T04:34:52","modified_gmt":"2021-05-16T20:34:52","slug":"continuously-updated-synthesis-method-about-10250-59-6","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=4105","title":{"rendered":"Continuously updated synthesis method about 10250-59-6"},"content":{"rendered":"

10250-59-6, name is Methyl 1,3-dimethyl-1H-pyrazole-5-carboxylate, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Application In Synthesis of Methyl 1,3-dimethyl-1H-pyrazole-5-carboxylate<\/a><\/p>\n

c. Synthesis of 1 ,3-dimethyl-pyrazole-5-carboxylic acid; 3,delta-dimethyl-pyrazole-delta-carboxylic acid methylester (5.14 Kg) is added to an aqueous solution of 20% sodium hydroxide (10 L) at O0C. The reaction mixture is stirred at room temperature for 18 hours and cooled to O0C. Concentrated hydrochloric acid (4.2 L) is then added to the reaction mixture in over 7 hours. The resulting thick slurry is stirred at room temperature for 18 hours. The mixture is filtered, and the solids are washed with water (500 mL), and dried in a vacuum oven for 18 hours (700C and 26 mm Hg) to provide 3.8 Kg of 1 ,3- dimethyl-pyrazole-delta-carboxylic acid (81 % yield with a purity of >97 % by HPLC).<\/p>\n

The synthetic route of 10250-59-6 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; PFIZER INC.; WO2006\/48761; (2006); A2;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 10250-59-6 has been constantly updated, and we look forward to future research findings.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[656,131],"tags":[126],"class_list":["post-4105","post","type-post","status-publish","format-standard","hentry","category-10250-59-6","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nContinuously updated synthesis method about<\/title>\n<meta name=\"description\" content=\"10250-59-6, name is Methyl 1,3-dimethyl-1H-pyrazole-5-carboxylate, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. 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