{"id":3608,"date":"2021-04-25T06:33:59","date_gmt":"2021-04-24T22:33:59","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=3608"},"modified":"2021-04-25T06:33:59","modified_gmt":"2021-04-24T22:33:59","slug":"analyzing-the-synthesis-route-of-13-dimethyl-1h-pyrazole-4-carbaldehyde","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=3608","title":{"rendered":"Analyzing the synthesis route of 1,3-Dimethyl-1H-pyrazole-4-carbaldehyde"},"content":{"rendered":"

Reference of 25016-12-0<\/a>, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 25016-12-0 as follows.<\/p>\n

A mixture of 1,3-dimethyl-1H-pyrazole-4-carbaldehyde (142 mg, 1.145 mmol), 2-amino-5-bromopyrazine (200 mg, 1.149 mmol), borane trimethylamine complex (126 mg, 1.73 mmol) and glacial acetic acid (137 mg, 2.29 mmol) in anhydrous methonol (3 ml) was stirred at room temperature overnight. The reaction mixture was then diluted with ethyl acetate, washed with water, dried over MgSO4 and filtered. The filtrate was concentrated to give 300 mg of (5-bromo-pyrazin-2-yl)-(1,3-dimethyl-1H-pyrazol-4-ylmethyl)amine as crude product, which was used for next step reaction without further purification. Crude yield: 93%. The (5-bromo-pyrazin-2-yl)-(1,3-dimethyl-1H-pyrazol-4-ylmethyl)amine (40 mg, 0.142 mmol) was used in the Suzuki coupling reaction described above to afford 19 mg of of the title compound. Yield: 36.5%. 1H NMR (CD3OD) delta 8.48 (s, 1H), 8.05 (s, 1H), 7.87 (d, 2H), 7.39 (d, 2H), 6.10 (s, 1H), 4.81 (s, 2H), 4.30 (m, 1H), 3.83 (s, 3H), 3.11-3.38 (m, 2H), 2.10 (s, 3H). M+1=367.<\/p>\n

According to the analysis of related databases, 25016-12-0, the application of this compound in the production field has become more and more popular.<\/p>\n","protected":false},"excerpt":{"rendered":"

According to the analysis of related databases, 25016-12-0, the application of this compound in the production field has become more and more popular.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[364,131],"tags":[126],"class_list":["post-3608","post","type-post","status-publish","format-standard","hentry","category-25016-12-0","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nAnalyzing the synthesis route of 1,3-Dimethyl-1H-pyrazole-4-carbaldehyde<\/title>\n<meta name=\"description\" content=\"Reference of 25016-12-0, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. 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