{"id":6470,"date":"2021-09-24T03:23:06","date_gmt":"2021-09-23T19:23:06","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=6470"},"modified":"2021-09-24T03:23:06","modified_gmt":"2021-09-23T19:23:06","slug":"24-sep-2021-news-brief-introduction-of-5334-40-7","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=6470","title":{"rendered":"24-Sep-2021 News Brief introduction of 5334-40-7"},"content":{"rendered":"<p>In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 5334-40-7 as follows. <a href=\"https:\/\/www.ambeed.com\/products\/5334-40-7.html\">Product Details of 5334-40-7<\/a><\/p>\n<p>Step 12-(4-Nitro- 1 H-pvrazo 1-3 -yl)-benzothiazoleTo a solution of4-nitro-1H-pyrazole-3-carboxylic acid (5 g, 31.8 mmol) in THF (40 mL) was added DMF (0.25 mL, 3.19 mmol) and oxalyl chloride (4.1 mL, 47.8 mmol). The mixture wasstirred at room temperature for 1 h and then concentrated under reduced pressure. The crude material was redissolved in NMP (40 mL) and 2-amino-beiizenethiol (4.0 mL, 31.8 mmol) was added. This mixture was heated at 100 \u00b0C for 1 h, at which point water (100 mL) was added and the aqueous phase extracted with ethyl acetate (3 x 25 mL). The combined organic layers were 42dried (Na2SO4), concentrated under reduced pressure, and purified by chromatography (silica, EtOAc \/ hexanes) to give 2-(4-nitro- 1 H-pyrazol-3 -yl)-benzothiazo le as a light yellow solid (4.8 g, 61 percent). MS (El\/Cl) m\/z: 245.0 [M &#8211; H].<\/p>\n<p>According to the analysis of related databases, 5334-40-7, the application of this compound in the production field has become more and more popular.<\/p>\n<p>Reference:<br \/><a href=\"http:\/\/v3.espacenet.com\/textdoc?DB=EPODOC&#038;IDX=WO2014064134&#038;F=0\">Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BHAGIRATH, Niala; DOMINIQUE, Romyr; KENNEDY-SMITH, Joshua; LUCAS, Matthew C.; PADILLA, Fernando; WO2014\/64134; (2014); A1;<\/a>,<br \/><a href=\"https:\/\/en.wikipedia.org\/wiki\/Pyrazole\">Pyrazole &#8211; Wikipedia<\/a>,<br \/><a href=\"https:\/\/www.sciencedirect.com\/topics\/chemistry\/pyrazoles\">Pyrazoles &#8211; an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to the analysis of related databases, 5334-40-7, the application of this compound in the production field has become more and more popular.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[153,131],"tags":[126],"class_list":["post-6470","post","type-post","status-publish","format-standard","hentry","category-5334-40-7","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Brief introduction of<\/title>\n<meta name=\"description\" content=\"In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. 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