{"id":884,"date":"2020-10-28T13:01:36","date_gmt":"2020-10-28T05:01:36","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=884"},"modified":"2020-10-28T13:01:36","modified_gmt":"2020-10-28T05:01:36","slug":"the-important-role-of-14-dimethylpyrazole","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=884","title":{"rendered":"The important role of 1,4-Dimethylpyrazole"},"content":{"rendered":"

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 1072-68-0, name is 1,4-Dimethylpyrazole, A new synthetic method of this compound is introduced below., 1072-68-0<\/a><\/p>\n

To a solution of 1,4-dimethyl-1H-pyrazole (2.5 g, 26.0 mmol, 1 equiv) in tetrahydrofuran (50 mL) was added n-butyllithium in hexane solution (2.5 M in hexane, 78.0 mmol, 31 mL, 3 equiv) dropwise at 0 C. under nitrogen atmosphere. The resulting solution was stirred at room temperature for 1 h and then cooled to -78 C. 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (14.52 g, 78.017 mmol, 3 equiv) was added and the reaction mixture was stirred at -78 C. for 0.5 hour, then slowly warmed up to 0 C. The reaction was quenched with brine and extracted with EtOAc (250 mL*3). The combined organic layer was washed with brine, dried over Na2SO4 and concentrated under reduced pressure. The residue was applied onto a silica gel column eluting with ethyl acetate\/petroleum ether (1:5). This resulted in 2.6 g (45%) of 1,4-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole as a white solid.<\/p>\n

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.<\/p>\n","protected":false},"excerpt":{"rendered":"

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[179,131],"tags":[145],"class_list":["post-884","post","type-post","status-publish","format-standard","hentry","category-1072-68-0","category-pyrazoles-derivatives","tag-m-w0-100"],"yoast_head":"\nThe important role of 1,4-Dimethylpyrazole<\/title>\n<meta name=\"description\" content=\"Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 1072-68-0, name is 1,4-Dimethylpyrazole, A new synthetic method of this compound is introduced below., 1072-68-0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pyrazoles-derivatives.com\/?p=884\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The important role of 1,4-Dimethylpyrazole\" \/>\n<meta property=\"og:description\" content=\"Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. 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