{"id":5988,"date":"2021-08-23T03:09:08","date_gmt":"2021-08-22T19:09:08","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5988"},"modified":"2021-08-23T03:09:08","modified_gmt":"2021-08-22T19:09:08","slug":"a-new-synthetic-route-of-5932-30-9","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5988","title":{"rendered":"A new synthetic route of 5932-30-9"},"content":{"rendered":"

5932-30-9, name is Ethyl 5-phenyl-1H-pyrazole-3-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. Safety of Ethyl 5-phenyl-1H-pyrazole-3-carboxylate<\/a><\/p>\n

Reference Example 24 Ethyl 1-[(4-methylphenyl)sulfonyl]-5-phenyl-1H-pyrazole-3-carboxylate Sodium hydride (60% in oil, 612 mg) was washed with hexane, suspended in N,N-dimethylformamide solution (5 mL), and a solution of ethyl 5-phenyl-1H-pyrazole-3-carboxylate (3.0 g) in N,N-dimethylformamide (10 mL) was added dropwise. After the completion of the dropwise addition, the reaction mixture was stirred at room temperature for 30 min, and added dropwise to an ice-cooled solution of p-toluenesulfonyl chloride (3.16 g) in N,N-dimethylformamide (10 mL). After the completion of the dropwise addition, the reaction mixture was stirred at room temperature for 1 hr, and concentrated under reduced pressure. Water was added to the residue, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluent:hexane-ethyl acetate=9:1?1:1) to give the title compound as a colorless solid (yield 1.037 g, 20%). 1H-NMR (CDCl3) delta: 1.42 (3H, t, J=7.4 Hz), 2.43 (3H, s), 4.43 (2H, q, J=7.4 Hz), 7.03 (1H, s), 7.30-7.50 (5H, m), 7.75-7.85 (2H, m), 8.07 (2H, d, J=8.4 Hz).<\/p>\n

The synthetic route of 5932-30-9 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; Takeda Pharmaceutical Company Limited; EP2005957; (2008); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 5932-30-9 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":[419,131],"tags":[127],"class_list":["post-5988","post","type-post","status-publish","format-standard","hentry","category-5932-30-9","category-pyrazoles-derivatives","tag-m-w200-300"],"yoast_head":"\nA new synthetic route of<\/title>\n<meta name=\"description\" content=\"5932-30-9, name is Ethyl 5-phenyl-1H-pyrazole-3-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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