Adding some certain compound to certain chemical reactions, such as: 5952-92-1, name is 1-Methyl-1H-pyrazole-4-carboxylic acid, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 5952-92-1. 5952-92-1
A suspension of 1 -methyl- lH-pyrazole-4-carboxy lie acid (0.25 g) in thionyl chloride (4 mL) was stirred at reflux for 30 minutes. The reaction was concentrated, the residue azeotroped with toluene and dissolved in acetonitrile (5 mL). To the cooled (0 ¡ãC) solution, a 2 M solution of (trimethylsilyl)diazomethane in hexanes (1.5 mL) was added and the mixture stirred at 0 ¡ãC for 1 hour. A solution of 33 wt. percent hydrogen bromide in acetic acid (1.0 mL) was added and the mixture stirred at room temperature for a further 80 minutes. To the reaction mixture, tert-butyl methyl ether (20 mL) was added and the resultant precipitate isolated by filtration to give the title product having the following physical properties (0.22 g). LC MS rR 1.23 minutes; MS (ES+) m/z 203 and 205 (M+H) a.
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 1-Methyl-1H-pyrazole-4-carboxylic acid.