{"id":6029,"date":"2021-08-25T03:09:45","date_gmt":"2021-08-24T19:09:45","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=6029"},"modified":"2021-08-25T03:09:45","modified_gmt":"2021-08-24T19:09:45","slug":"a-new-synthetic-route-of-118430-73-2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=6029","title":{"rendered":"A new synthetic route of 118430-73-2"},"content":{"rendered":"

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 118430-73-2 as follows. Formula: C8H15N3<\/a><\/p>\n

Example I; Synthesis Example I (Preparation of Exemplified compound (1)); [Show Image] A mixture of 41.4 g of 4-nitroaniline (0.3 mol), 84 ml of conc. hydrochloric acid, 60 ml of acetic acid and 84 ml of propionic acid was stirred at an inner temperature ranging from 0 C to 5C. To the mixture was dropped 20.7 g (0.3 mol) of sodium nitrite per 45 ml of water at an inner temperature of 5 C or less. Thereafter, stirring was continued for 30 minutes at an inner temperature ranging from 0 C to 5 C. The resultant diazonium salt solution was dropped to 600 ml of acetonitrile solution containing 46.0 g (0.3 mol) of 5-tert-butyl-2-methyl-2H-pyrazole-3-ylamine at an inner temperature of 10 C or less. After the dropwise addition of the diazonium salt solution, the resultant reaction solution was kept stirring for 2 hours, followed by injection of 1000 ml of water. Then, the precipitated azo dye was separated by a filtration. Recrystallization of the produced crystals was performed with 1650 ml of methanol, to obtain Exemplified compound (1). Yield: 72 g (80%), Melting point: 199 C to 201 C. lambdamax (ethyl acetate solution) of Exemplified compound (1) was 444 nm.<\/p>\n

According to the analysis of related databases, 118430-73-2, the application of this compound in the production field has become more and more popular.<\/p>\n

Reference:
Patent; FUJIFILM Corporation; EP1903078; (2008); A2;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

According to the analysis of related databases, 118430-73-2, 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":[241,131],"tags":[126],"class_list":["post-6029","post","type-post","status-publish","format-standard","hentry","category-118430-73-2","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nA new synthetic route 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. An updated downstream synthesis route of 118430-73-2 as follows. 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