{"id":1150,"date":"2020-12-01T10:57:04","date_gmt":"2020-12-01T02:57:04","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=1150"},"modified":"2020-12-01T10:57:04","modified_gmt":"2020-12-01T02:57:04","slug":"brief-introduction-of-3-bromo-1h-pyrazole","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=1150","title":{"rendered":"Brief introduction of 3-Bromo-1H-pyrazole"},"content":{"rendered":"

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 14521-80-3 as follows. 14521-80-3<\/a><\/p>\n

Production Example 60A mixture of 0.28 g of 2-(3-fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.19 g of 3-bromopyrazole, 0.55 g of potassium carbonate and 2 ml of DMF was stirred while heating at 50C for 1.5 hours. Then, the reaction mixture was cooled to room temperature. Water was added to the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.31 g of 2-[3-(3- bromopyrazole-l-yl)pyridin-4-yl]-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 59”).Active compound 591H-NMR (CDC13) 6: 8.92 (s, IH), 8.89 (d, J=5.1 Hz, IH), 8.16 (d, J=5.1 Hz, IH), 8.08-8.07 (m, IH), 7.69 (dd, J=8.8, 1.2 Hz, IH), 7.66 (d, J=2.4 Hz, IH), 7.59 (d, J=8.8 Hz, IH), 6.57 (d, J=2.4 Hz, IH)<\/p>\n

According to the analysis of related databases, 14521-80-3, 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, 14521-80-3, 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":[180,131],"tags":[126],"class_list":["post-1150","post","type-post","status-publish","format-standard","hentry","category-14521-80-3","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nBrief introduction of 3-Bromo-1H-pyrazole<\/title>\n<meta name=\"description\" content=\"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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