{"id":5639,"date":"2021-07-31T03:27:26","date_gmt":"2021-07-30T19:27:26","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5639"},"modified":"2021-07-31T03:27:26","modified_gmt":"2021-07-30T19:27:26","slug":"introduction-of-a-new-synthetic-route-about-4522-35-4-2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5639","title":{"rendered":"Introduction of a new synthetic route about 4522-35-4"},"content":{"rendered":"

Some common heterocyclic compound, 4522-35-4, name is 3-Iodo-1H-pyrazole, molecular formula is C3H3IN2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Recommanded Product: 4522-35-4<\/a><\/p>\n

INTERMEDIATE 16 3-(3-Iodo-lH-pyrazol-l-yl)-5-(trifluorometyl pyridine To a solution of 3-iodopyrazole (0.70 g, 3.61 mmol), in DMSO (15.0 mL) was added sodium hydride (60% in oil, 0.159 g, 3.97 mmol), and stirred for 0.5 h before 3- fluoro-5-trifluoromethylpyridine (0.596 g, 3.61 mmol) was added. The reaction mixture was stirred at 90 C overnight. This was quenched by the addition of water and extracted with EtOAc. The combined organic extracts were washed with water and brine, dried over MgS04 and concentrated in vacuo. The crude mixture was purified by flash chromatography (ISCO Combiflash, 40 g, 0-20 % EtOAc in hexanes) to give 3-(3-iodo-lH-pyrazol-l-yl)-5-(trifluorometyl)pyridine, as a white solid. LCMS calc. = 339.95; found = 339.86 (M+H)+. 1H NMR (500 MHz, CDC13): delta 9.12 (br s, 1 H); 8.83 (br s, 1 H); 8.32 (br s, 1 H); 7.85 (br s, 1 H); 6.73 (d, J= 1.7 Hz, 1 H).<\/p>\n

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4522-35-4, its application will become more common.<\/p>\n

Reference:
Patent; MERCK SHARP & DOHME CORP.; MOCHIDA PHARMACEUTICAL CO., LTD.; SMITH, Cameron, James; TAN, John, Qiang; ZHANG, Ting; BALKOVEC, James; GREENLEE, William, John; GUO, Liangqin; XU, Jiayi; CHEN, Yi-heng; CHEN, Yili; CHACKALAMANNIL, Samuel; HIRABAYASHI, Tomokazu; NAGASUE, Hiroshi; OGAWA, Kouki; WO2014\/120346; (2014); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4522-35-4, its application will become more common.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[147,131],"tags":[126],"class_list":["post-5639","post","type-post","status-publish","format-standard","hentry","category-4522-35-4","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nIntroduction of a new synthetic route about<\/title>\n<meta name=\"description\" content=\"Some common heterocyclic compound, 4522-35-4, name is 3-Iodo-1H-pyrazole, molecular formula is C3H3IN2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 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