{"id":5089,"date":"2021-07-01T03:37:21","date_gmt":"2021-06-30T19:37:21","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5089"},"modified":"2021-07-01T03:37:21","modified_gmt":"2021-06-30T19:37:21","slug":"research-on-new-synthetic-routes-about-c9h8n2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5089","title":{"rendered":"Research on new synthetic routes about C9H8N2"},"content":{"rendered":"

10199-68-5, name is 4-Phenyl-1H-pyrazole, 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. HPLC of Formula: C9H8N2<\/a><\/p>\n

3.1 Ethyl 2-(4-phenyl-1H-pyrazol-1-yl)pyridine-3-carboxylate A mixture of 3.6 g of ethyl 2-chloronicotinate (19.4 mmol), 1.3 g of 4-phenylpyrazole (8.12 mmol), 4.4 g of K2CO3, 40 mg of 18-crown-6 and 30 mg of KI in 30 ml of N,N-dimethylformamide was stirred at 130 C. for 6 hours. For workup, H2O was added and, after extraction with ethyl acetate, the organic phase was washed with H2O and sat. NaCl solution. The crude product obtained after drying and concentration of the solution was purified by chromatography on silica gel (eluent: CH2Cl2\/methanol 1-10%). In total, 1.9 g of an oil were obtained, which crystallized completely on standing in a refrigerator. ESI-MS [M+H]+=294.15.<\/p>\n

The synthetic route of 10199-68-5 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; Kling, Andreas; Hornberger, Wilfried; Mack, Helmut; Moeller, Achim; Nimmrich, Volker; Seemann, Dietmar; Lubisch, Wilfried; US2008\/234330; (2008); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 10199-68-5 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":[289,131],"tags":[126],"class_list":["post-5089","post","type-post","status-publish","format-standard","hentry","category-10199-68-5","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nResearch on new synthetic routes about<\/title>\n<meta name=\"description\" content=\"10199-68-5, name is 4-Phenyl-1H-pyrazole, 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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