{"id":5952,"date":"2021-08-20T03:06:42","date_gmt":"2021-08-19T19:06:42","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5952"},"modified":"2021-08-20T03:06:42","modified_gmt":"2021-08-19T19:06:42","slug":"application-of-16034-46-1","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5952","title":{"rendered":"Application of 16034-46-1"},"content":{"rendered":"

These common heterocyclic compound, 16034-46-1, name is 1-Methyl-1H-pyrazole-5-carboxylic acid, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Recommanded Product: 1-Methyl-1H-pyrazole-5-carboxylic acid<\/a><\/p>\n

To a solution of 1-methyl-1H-pyrazole-5-carboxylic acid (compound 4A, 4.58 g, 36.3 mmol), DIEA (13.7 g, 106 mmol) in CH2Cl2 (30 mL) was added EDCI (11.6 g, 60.5 mmol) and DMAP (4.44 g, 36.3 mmol) at -5 C., the mixture was stirred at -5 C. for 30 min. Then methyl 4-amino-3-methylbenzoate (compound 11, 5.00 g, 30.3 mmol) was added, stirred at -5 C. for 30 min. The mixture was warmed to 25 C., stirred for 11 hrs. TLC (petroleum ether:ethyl acetate=1:1, Rf=0.52) showed starting material consumed completely. The mixture was concentrated in vacuum to give light yellow oil. The oil was purified by silica gel column chromatography (petroleum ether:ethyl acetate=90:10 to 50:50) to give methyl 3-methyl-4-(1-methyl-1H-pyrazole-5-carboxamido)benzoate (compound 12, 5.70 g, 69% yield) as light yellow solid.<\/p>\n

The synthetic route of 1-Methyl-1H-pyrazole-5-carboxylic acid has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; Kyn Therapeutics; Castro, Alfredo C.; Evans, Catherine Anne; (108 pag.)US2019\/55218; (2019); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 1-Methyl-1H-pyrazole-5-carboxylic acid 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":[169,131],"tags":[126],"class_list":["post-5952","post","type-post","status-publish","format-standard","hentry","category-16034-46-1","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nApplication of<\/title>\n<meta name=\"description\" content=\"These common heterocyclic compound, 16034-46-1, name is 1-Methyl-1H-pyrazole-5-carboxylic acid, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 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