{"id":4300,"date":"2021-05-26T05:00:53","date_gmt":"2021-05-25T21:00:53","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=4300"},"modified":"2021-05-26T05:00:53","modified_gmt":"2021-05-25T21:00:53","slug":"brief-introduction-of-39806-90-1","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=4300","title":{"rendered":"Brief introduction of 39806-90-1"},"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. 39806-90-1, name is 4-Iodo-1-methyl-1H-pyrazole, A new synthetic method of this compound is introduced below., category: pyrazoles-derivatives<\/a><\/p>\n

A solution of 4-iodo-1-methyl-1H-pyrazole (0.80 g, 3.9 mmol) in THF (7.04 g, 8.00 ml, 98 mmol) was cooled at 0 C. A solution of isopropylmagnesium chloride lithium chloride complex in THF (5.42 ml, 4.23 mmol, 0.78 molar) was added dropwise and the reaction was stifled for 1 hour. A solution of N-methoxy-N-methyltetrahydro-2H-pyran-4-carboxamide (0.733 g, 4.23 mmol) in THF (2 mL) was added dropwise. Cooling was removed after 15 min and reaction was then stirred for 2 hours. To the mixture was added 2 M HCl (20 mL) and it was extracted with AcOEt (3\u00d725 mL). The combined organic phases were washed with brine, dried over MgSO4 and concentrated in vacuo. The crude product was purified by flash chromatography to yield (1-methyl-1H-pyrazol-4-yl)(tetrahydro-2H-pyran-4-yl)methanone (220 mg, 1.13 mmol, 29.4% yield). [0365] 1H NMR (600 MHz, CDCl3) delta 7.87 (s, 1H), 7.87 (s, 1H), 4.03 (ddd, J=11.4, 4.1, 2.4 Hz, 2H), 3.92 (s, 3H), 3.49 (td, J=11.7, 2.3 Hz, 211), 3.06 (tt, J=11.3, 3.8 Hz, 1H), 1.86 (dtd, J=13.8, 11.7, 4.4 Hz, 2H), 1.72 (ddd, J=13.4, 3.7, 2.0 Hz, 2H)<\/p>\n

The synthetic route of 39806-90-1 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; H. Lundbeck A\/S; Kilburn, John Paul; Rasmussen, Lars Kyhn; Jessing, Mikkel; Eldemenky, Eman Mohammed; Chen, Bin; Jiang, Yu; Hopper, Allen T.; US2014\/107340; (2014); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 39806-90-1 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":[162,131],"tags":[127],"class_list":["post-4300","post","type-post","status-publish","format-standard","hentry","category-39806-90-1","category-pyrazoles-derivatives","tag-m-w200-300"],"yoast_head":"\nBrief introduction of<\/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. 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