{"id":3782,"date":"2021-05-06T04:34:47","date_gmt":"2021-05-05T20:34:47","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=3782"},"modified":"2021-05-06T04:34:47","modified_gmt":"2021-05-05T20:34:47","slug":"some-tips-on-ethyl-3-isopropyl-1h-pyrazole-5-carboxylate","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=3782","title":{"rendered":"Some tips on Ethyl 3-isopropyl-1H-pyrazole-5-carboxylate"},"content":{"rendered":"

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 78208-72-7, name is Ethyl 3-isopropyl-1H-pyrazole-5-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 78208-72-7<\/a><\/p>\n

A mixture of ethyl 5-isopropyl-1H-pyrazole-3-carboxylate (Chem. and Pharm. Bull. 1984; 32(4);1568) (509 mg, 2.8 mmol), 2-(2-bromoethoxy)tetrahydro-2-pyran (732 mg, 3.5 mmol) and potassium carbonate (483 mg, 3.5 mmol) in 1-methyl-2-pyrrolidinone (5 ml) was stirred at 80\u00b0 C. for 18 hours. The cooled mixture was poured into ethyl acetate and washed with water and brine, then dried (MgSO4) and evaporated under reduced pressure. The residue was purified by column chromatography on silica gel using an elution gradient of ethyl acetate:pentane (20:80 to 40:60) to afford the title compound of preparation 34 as a clear oil, 663 mg. [0469] 1HNMR (CDCl3, 400 MHz) delta: 1.25 (d, 6H), 1.37 (t, 3H), 1.44-1.71 (m, 6H), 2.97 (m, 1H), 3.42 (m, 1H), 3.54 (m, 1H), 3.75 (m, 1H), 4.00 (m, 1H), 4.32 (q, 2H), 4.54 (t, 1H), 4.68 (m, 1H), 4.76 (m, 1H), 6.64 (s, 1H). [0470] LRMS: m\/z ACPI+ 311 [MH]+ [0471] Further elution provided the title compound of preparation 35, 242 mg. [0472] 1HNMR (CDCl3, 400 MHz) delta: 1.25 (d, 6H), 1.38 (t, 3H), 1.46-1.72 (m, 6H), 3.15 (m, 1H), 3.45 (m, 1H), 3.65 (m, 1H), 3.81 (m, 1H), 4.10 (m, 1H), 4.34 (m, 2H), 4.39 (m, 2H), 4.49 (t, 1H), 6.57 (s, 1H). [0473] LRMS: m\/z ACPI+ 311 [MH]+<\/p>\n

The synthetic route of 78208-72-7 has been constantly updated, and we look forward to future research findings.<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 78208-72-7 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":[372,131],"tags":[126],"class_list":["post-3782","post","type-post","status-publish","format-standard","hentry","category-78208-72-7","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nSome tips on Ethyl 3-isopropyl-1H-pyrazole-5-carboxylate<\/title>\n<meta name=\"description\" content=\"In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 78208-72-7, name is Ethyl 3-isopropyl-1H-pyrazole-5-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. 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