{"id":6250,"date":"2021-09-09T03:14:58","date_gmt":"2021-09-08T19:14:58","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=6250"},"modified":"2021-09-09T03:14:58","modified_gmt":"2021-09-08T19:14:58","slug":"9-sep-21-news-some-tips-on-84547-84-2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=6250","title":{"rendered":"9-Sep-21 News Some tips on 84547-84-2"},"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. 84547-84-2, name is 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. name: 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid<\/a><\/p>\n

A mixture of 4-bromo- 1 -methyl- 1 H-pyrazole-5-carboxylic acid (5.0 g, 24.4 mmol) and BH3.THF (36.6 mL of a 1 M solution in THF, 36.6 mmol) in THF (50 mL) was stirred at 50 C for 2 days; at this point LCMS showed the completion of the reaction. The reaction was cooled to RT and cautiously quenched with aq. IN HC1 and stirred at RT for 1 h, after which the mixture was extracted with EtOAc (3 X 50 mL). The combined organic extracts were concentrated in vacuo. The residue was chromatographed (80 g Si02; continuous gradient from 0% to 100% EtOAc in hexanes, 25 min) to give the title compound (3.60 g, 18.9 mmol, 77 % yield) as a white solid. LCMS, [M+H]+ = 193.0.<\/p>\n

The synthetic route of 84547-84-2 has been constantly updated, and we look forward to future research findings.<\/p>\n

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; SHI, Yan; CHENG, Peter Tai Wah; WANG, Ying; (140 pag.)WO2019\/126085; (2019); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of 84547-84-2 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":[479,131],"tags":[127],"class_list":["post-6250","post","type-post","status-publish","format-standard","hentry","category-84547-84-2","category-pyrazoles-derivatives","tag-m-w200-300"],"yoast_head":"\nSome tips on<\/title>\n<meta name=\"description\" content=\"In the next few decades, the world population will flourish. 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