{"id":11954,"date":"2023-01-04T08:13:19","date_gmt":"2023-01-04T00:13:19","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=11954"},"modified":"2023-01-04T08:13:19","modified_gmt":"2023-01-04T00:13:19","slug":"chande-madhukar-s-et-al-published-their-research-in-indian-journal-of-chemistry-in-1995-cas-51395-52-9","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=11954","title":{"rendered":"Chande, Madhukar S. et al. published their research in Indian Journal of Chemistry in 1995 | CAS: 51395-52-9"},"content":{"rendered":"<p>Novel synthesis of new 5,7-disubstituted-2-alkyl\/arylamino-4H-pyrazolo[4,5-e][1,3,4]thiadiazines and 4,6-disubstituted-3-amino\/anilino-2-alkyl\/aryliminopyrazolo[3,4-d]thiazolines was written by Chande, Madhukar S.;Joshi, Rajesh D.. And the article was included in Indian Journal of Chemistry in 1995.<a href=\"https:\/\/www.ambeed.com\/products\/51395-52-9.html\">Recommanded Product: 51395-52-9<\/a> This article mentions the following:<\/p>\n<p>The title compounds have been prepared by reaction of substituted 4-bromopyrazolin-5-ones with thiosemicarbazides. An alternate unambiguous synthesis of pyrazolo[3,4-d]thiazolines has been described. In the experiment, the researchers used many compounds, for example, 4-Bromo-3-methyl-1H-pyrazol-5(4H)-one (cas: 51395-52-9<a href=\"https:\/\/www.ambeed.com\/products\/51395-52-9.html\">Recommanded Product: 51395-52-9<\/a>).<\/p>\n<p>4-Bromo-3-methyl-1H-pyrazol-5(4H)-one (cas: 51395-52-9) belongs to pyrazole derivatives. Pyrazole has two ring nitrogen atoms in which N1 is pyrrolic and N2 is pyridine-like. The N1 nitrogen is not reactive but is deprotonated in the presence of a base-forming anion. The presence of both electronegative nitrogen atoms in the pyrazole ring reduces the electron density of the C3- and C5-positions leaving electron density of C4-position unaltered. Thus the C4-position is vulnerable to electrophilic attack. The C3 electrophilic-position may undergo deprotonation in the presence of a strong base leading to ring opening.<a href=\"https:\/\/www.ambeed.com\/products\/51395-52-9.html\">Recommanded Product: 51395-52-9<\/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>4-Bromo-3-methyl-1H-pyrazol-5(4H)-one (cas: 51395-52-9) belongs to pyrazole derivatives. Pyrazole has two ring nitrogen atoms in which N1 is pyrrolic and N2 is pyridine-like. The N1 nitrogen is not reactive but is deprotonated in the presence of a base-forming anion. The presence of both electronegative nitrogen atoms in the pyrazole ring reduces the electron density of the C3- and C5-positions leaving electron density of C4-position unaltered. Thus the C4-position is vulnerable to electrophilic attack. The C3 electrophilic-position may undergo deprotonation in the presence of a strong base leading to ring opening.<a href=\"https:\/\/www.ambeed.com\/products\/51395-52-9.html\">Recommanded Product: 51395-52-9<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[131],"tags":[128],"class_list":["post-11954","post","type-post","status-publish","format-standard","hentry","category-pyrazoles-derivatives","tag-100-200"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chande, Madhukar S. et al. published their research in Indian Journal of Chemistry in 1995 | CAS: 51395-52-9 | pyrazoles-derivatives<\/title>\n<meta name=\"description\" content=\"Novel synthesis of new 5,7-disubstituted-2-alkyl\/arylamino-4H-pyrazolo[4,5-e][1,3,4]thiadiazines and 4,6-disubstituted-3-amino\/anilino-2-alkyl\/aryliminopyrazolo[3,4-d]thiazolines was written by Chande, Madhukar S.;Joshi, Rajesh D.. 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