{"id":5271,"date":"2021-07-09T03:42:35","date_gmt":"2021-07-08T19:42:35","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=5271"},"modified":"2021-07-09T03:42:35","modified_gmt":"2021-07-08T19:42:35","slug":"new-learning-discoveries-about-288-13-1-5","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=5271","title":{"rendered":"New learning discoveries about 288-13-1"},"content":{"rendered":"<p>288-13-1, name is 1H-Pyrazole, 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. <a href=\"https:\/\/www.ambeed.com\/products\/288-13-1.html\">HPLC of Formula: C3H4N2<\/a><\/p>\n<p>Step 1: Preparation of 3-pyrazol-1-yl-pyridine To a solution of 3-bromopyridine (5 g, 0.031 mol) in 50 ml of acetonitrile were added pyrazole (2.6 g, 0.038 mol), Cs2CO3 (16.5 g, 0.050 mol), Cu2O (0.226 g, 0.0016 mol), and salicylaldoxime (0.867 g, 0.006 mol) under N2 atmosphere. The reaction mass was refluxed for 24 hrs at 80 C. The reaction mass was concentrated and the crude was purified by column chromatography using ethyl acetate and hexane (1:1) to afford the pyrazolyl pyridine as a dark brown liquid (2 g, 43%): 1H NMR (400 MHz, CDCl3) delta 8.99 (d, J=2.8 Hz, 1H), 8.48 (dd, J=4.8, 1.2 Hz, 1H), 8.11-8.08 (m, 1H), 7.99 (d, J=1.2 Hz, 1H), 7.78 (d, J=1.2 Hz, 1H), 7.38-7.35 (m, 1H), 6.53 (t, J=1.2 Hz, 1H); MS (m\/z) 146 [M+1].<\/p>\n<p>The synthetic route of 288-13-1 has been constantly updated, and we look forward to future research findings.<\/p>\n<p>Reference:<br \/><a href=\"\">Patent; DOW AGROSCIENCES LLC; Buysse, Ann M.; Niyaz, Noormohamed M.; Demeter, David A.; Zhang, Yu; Walsh, Martin J.; Kubota, Asako; Hunter, Ricky; Trullinger, Tony K.; Lowe, Christian T.; Knueppel, Daniel; Patny, Akshay; Garizi, Negar; LePlae, JR., Paul Renee; Wessels, Frank; Ross, JR., Ronald; DeAmicis, Carl; Borromeo, Peter; US2013\/288893; (2013); 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>The synthetic route of 288-13-1 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":[149,131],"tags":[145],"class_list":["post-5271","post","type-post","status-publish","format-standard","hentry","category-288-13-1","category-pyrazoles-derivatives","tag-m-w0-100"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New learning discoveries about<\/title>\n<meta name=\"description\" content=\"288-13-1, name is 1H-Pyrazole, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. 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