{"id":6179,"date":"2021-09-06T03:31:22","date_gmt":"2021-09-05T19:31:22","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=6179"},"modified":"2021-09-06T03:31:22","modified_gmt":"2021-09-05T19:31:22","slug":"6-sep-2021-news-continuously-updated-synthesis-method-about-25016-11-9","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=6179","title":{"rendered":"6-Sep-2021 News Continuously updated synthesis method about 25016-11-9"},"content":{"rendered":"

25016-11-9, name is 1-Methyl-1H-pyrazole-4-carbaldehyde, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Quality Control of 1-Methyl-1H-pyrazole-4-carbaldehyde<\/a><\/p>\n

1-methyl-1H-pyrazole-4-carbaldehyde previously obtained, malonic acid (4.68g, 45mmol), pyridine (4ml, 50mmol) and piperidine (0.09ml, 1mmol) were placed in a 250 ml flask and heated at 110C for 6h under nitrogen, then the reaction was stopped and cooled. The resulting solution was added with water (100ml), followed by addition of strong aqua dropwise to dissolve all the solids. The solution was then brought to pH~1 with concentrated hydrochloric acid. The precipitate thus obtained was collected by filtration, washed with water several times and then dried in vacuo to give the title compound (2.9g). 1H-NMR (d6-DMSO, 300 MHz) delta3.83 (s, 3H), 6.17 (d, 1H, J=16.2), 7.45 (d, 1H, J=15.9), 7.83 (s, 1H), 8.07 (s, 1H), 12.07 (s, 1H).<\/p>\n

The synthetic route of 25016-11-9 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; Shanghai Institute of Materia Medica, Chinese Academy of Sciences; SHEN, Jianhua; WANG, Yiping; WANG, Kai; EP2725024; (2014); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 25016-11-9 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":[151,131],"tags":[126],"class_list":["post-6179","post","type-post","status-publish","format-standard","hentry","category-25016-11-9","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nContinuously updated synthesis method about<\/title>\n<meta name=\"description\" content=\"25016-11-9, name is 1-Methyl-1H-pyrazole-4-carbaldehyde, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. 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