{"id":10925,"date":"2022-11-10T04:21:56","date_gmt":"2022-11-09T20:21:56","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=10925"},"modified":"2022-11-10T04:21:56","modified_gmt":"2022-11-09T20:21:56","slug":"burja-bojans-team-published-research-in-tetrahedron-in-2009-10-17-cas-27412-71-1","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=10925","title":{"rendered":"Burja, Bojan&#8217;s team published research in Tetrahedron  in 2009-10-17 | CAS: 27412-71-1"},"content":{"rendered":"<p>Burja, Bojan published the artcile<b><i>A simple approach to pyrazol-3-ones via diazenes<\/i><\/b>,  <a href=\"https:\/\/www.ambeed.com\/products\/27412-71-1.html\">Quality Control of 27412-71-1<\/a>,  the main research area is  arylpropenoic acid oxalyl chloride activation methyl carbazate amidation; hydrazide arylpropenoic acid preparation oxidation zirconium tetrachloride cyclization; nitrogen protected arylpyrazolone preparation deprotection; arylpyrazolone preparation.<\/p>\n<p>An efficient entry into pyrazol-3-ones is described starting from propenoic acids that were first transformed into the corresponding hydrazides. Oxidation of the hydrazides gave the diazenes and the latter cyclized to pyrazol-3-ones on treatment with ZrCl4. The methoxycarbonyl protection of the N-1 of the pyrazolone derivatives was easily removed under mild reaction conditions.<\/p>\n<p>Tetrahedron published new progress about Amidation. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, <a href=\"https:\/\/www.ambeed.com\/products\/27412-71-1.html\">Quality Control of 27412-71-1<\/a>.<\/p>\n<p>Referemce:<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<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tetrahedron published new progress about Amidation. 27412-71-1 belongs to class pyrazoles-derivatives, name is 5-Phenyl-1H-pyrazol-3(2H)-one, and the molecular formula is C9H8N2O, <a href=\"https:\/\/www.ambeed.com\/products\/27412-71-1.html\">Quality Control of 27412-71-1<\/a>.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[678,131],"tags":[717],"class_list":["post-10925","post","type-post","status-publish","format-standard","hentry","category-27412-71-1","category-pyrazoles-derivatives","tag-m-w150-200"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Burja, Bojan&#039;s team published research in Tetrahedron in 2009-10-17 | CAS: 27412-71-1 | pyrazoles-derivatives<\/title>\n<meta name=\"description\" content=\"Burja, Bojan published the artcileA simple approach to pyrazol-3-ones via diazenes, Quality Control of 27412-71-1, the main research area is arylpropenoic acid oxalyl chloride activation methyl carbazate amidation; 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