{"id":5382,"date":"2021-07-16T03:27:16","date_gmt":"2021-07-15T19:27:16","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5382"},"modified":"2021-07-16T03:27:16","modified_gmt":"2021-07-15T19:27:16","slug":"a-new-synthetic-route-of-c4h4cln3o2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5382","title":{"rendered":"A new synthetic route of C4H4ClN3O2"},"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. 42098-25-9, name is 5-Chloro-1-methyl-4-nitro-1H-pyrazole belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. name: 5-Chloro-1-methyl-4-nitro-1H-pyrazole<\/a><\/p>\n

Example 64b 3-Fluoro-5-(4-methoxybenzyloxy)-1-(1-methyl-4-nitro-1H-pyrazol-5-yl)azepane To a solution of tert-butyl 3-fluoro-5-(4-methoxybenzyloxy)azepane-1-carboxylate (740 mg, 0.21 mmol) in MeOH (5 mL) was added HCl (4 M in 1,4-dioxane, 5.3 mL, 21 mmol) and the solution was stirred at room temperature for 16 hr. The solvents were removed under reduced pressure and the residue was dissolved in MeOH and loaded onto an SCX column. The column was washed with MeOH and eluted with 7 N ammonia in MeOH. The solvents were removed under reduced pressure to afford a yellow oil. To a solution of this oil in dry DMSO (15 mL) was added potassium fluoride (0.32 g, 8.4 mmol) and 5-chloro-1-methyl-4-nitro-1H-pyrazole (372 mg, 2.31 mmol) and the mixture was heated at 65 C. for 16 hr. After cooling to room temperature, the mixture was diluted with water (300 mL) and extracted with EtOAc (2*50 mL). The combined organic layers were washed with water (3*50 mL) and the solvent was removed under reduced pressure. Purification via silica gel column chromatography (20-100% EtOAc\/isohexane) gave 3-fluoro-5-(4-methoxybenzyloxy)-1-(1-methyl-4-nitro-1H-pyrazol-5-yl)azepane as a yellow oil (300 g, 55% over two steps). 1H NMR (400 MHz, CDCl3) delta 7.33-7.23 (m, 3H), 6.89-6.86 (m, 2H), 4.82-4.66 (m, 2H), 4.49-3.93 (m, 1H), 3.81 (s, 3H), 3.30-2.99 (m, 4H), 2.95-2.74 (m, 4H), 2.35-2.03 (m, 2H), 1.98-1.83 (m, 2H).<\/p>\n

The synthetic route of 42098-25-9 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; GENENTECH, INC.; Hodges, Alastair James; Matteucci, Mizio; Sharpe, Andrew; Sun, Minghua; Wang, Xiaojing; Tsui, Vickie H.; US2013\/79321; (2013); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 42098-25-9 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":[256,131],"tags":[126],"class_list":["post-5382","post","type-post","status-publish","format-standard","hentry","category-42098-25-9","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nA new synthetic route of<\/title>\n<meta name=\"description\" content=\"In the next few decades, the world population will flourish. 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