{"id":3206,"date":"2021-04-08T00:00:00","date_gmt":"2021-04-07T16:00:00","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=3206"},"modified":"2021-04-08T00:00:00","modified_gmt":"2021-04-07T16:00:00","slug":"the-important-role-of-tert-butyl-46-dihydropyrrolo34-cpyrazole-52h-carboxylate","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=3206","title":{"rendered":"The important role of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate"},"content":{"rendered":"

Application of 1280210-79-8<\/a>, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 1280210-79-8, name is tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.<\/p>\n

INTERMEDIATE 6; 2-(2-Hydroxy-2-methylpropyl -2,4,5,6-tetrahydropyrrolo[3,4-c]pyrazol-5-ium trifluoroacetate saltTo a stirred solution of tert-butyl 2,6-dihydropyrrolo[3 ,4-c]pyrazole-5(4H)-carboxyIate(35 g, 167 mmol) in DMF (500 mL) at 0 C under N2 was added sodium hexamethyldisilazide in THF (351 mL, 351 mmol) and the mixture was stirred at 0 C for 30 min. Isobutylene oxide (74.3 mL, 836 mmol) was then slowly added. The solution was stirred at 0C for 0.5 h and then stirred at room temperature for 1 h. The solution was heated to 80C for 100 min in a microwave oven, cooled to room temperature and evapoarted under vacuum. The residue was purified by column chromatography on silica gel, eluting with a gradient of 0% to 6% CH2Cl2 MeOH (containing 1 % NH4OH) to give a mixture of two regioisomers. The mixture of tworegioisomers A and B was resolved by chromatography on a ChiralPak AD-H column eluting with 4-40% MeOH\/C02 to give isomer A as the faster eluting isomer and isomer B as the slower eluting isomer. NMR (500 MHz, CD3OD) for isomer B: 67.42 (d, 1 H); 4.42 (s, 2H); 4. 1 (s, 2H); 4.07 (s, 2H); 1.51 (d, 9H); 1.16 (s, 6H). LC-MS: 226.27 (M+l-56).The desired isomer B was treated with 1 :1 TFA\/C?C12 for 1 h to give the title compound. NMR (500 MHz, CD3OD): 57.55 (s, 1H); 4.43 (s, 2H); 4.39 (s, 2H); 4.10 (s, 2H);1.17 (s, 6H). LC-MS: 182.31 (M+l).<\/p>\n

The synthetic route of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate has been constantly updated, and we look forward to future research findings.<\/p>\n","protected":false},"excerpt":{"rendered":"

The synthetic route of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate 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":[222,131],"tags":[127],"class_list":["post-3206","post","type-post","status-publish","format-standard","hentry","category-1280210-79-8","category-pyrazoles-derivatives","tag-m-w200-300"],"yoast_head":"\nThe important role of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate<\/title>\n<meta name=\"description\" content=\"Application of 1280210-79-8, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 1280210-79-8, name is tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pyrazoles-derivatives.com\/?p=3206\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The important role of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate\" \/>\n<meta property=\"og:description\" content=\"Application of 1280210-79-8, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 1280210-79-8, name is tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pyrazoles-derivatives.com\/?p=3206\" \/>\n<meta property=\"og:site_name\" content=\"pyrazoles-derivatives\" \/>\n<meta property=\"article:published_time\" content=\"2021-04-07T16:00:00+00:00\" \/>\n<meta name=\"author\" content=\"Jessica.F\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jessica.F\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=3206\",\"url\":\"https:\/\/www.pyrazoles-derivatives.com\/?p=3206\",\"name\":\"The important role of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate\",\"isPartOf\":{\"@id\":\"http:\/\/www.pyrazoles-derivatives.com\/#website\"},\"datePublished\":\"2021-04-07T16:00:00+00:00\",\"author\":{\"@id\":\"http:\/\/www.pyrazoles-derivatives.com\/#\/schema\/person\/d9a9f27bed675392c6f363a01ffd49f1\"},\"description\":\"Application of 1280210-79-8, In the next few decades, the world population will flourish. 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As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 1280210-79-8, name is tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.pyrazoles-derivatives.com\/?p=3206","og_locale":"en_US","og_type":"article","og_title":"The important role of tert-Butyl 4,6-dihydropyrrolo[3,4-c]pyrazole-5(2H)-carboxylate","og_description":"Application of 1280210-79-8, In the next few decades, the world population will flourish. 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