Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 31728-75-3, name is 1,5-Dimethyl-1H-pyrazole-4-carboxylic acid, This compound has unique chemical properties. The synthetic route is as follows., Formula: C6H8N2O2
The 1,5-Dimethyl-1H-pyrazole-4-carboxylic acid [3-(3-hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide was prepared from 3-nitrobenzoyl chloride using the following multiple step procedure: Step 1: 1,5-Dimethyl-1H-pyrazole-4-carboxylic acid [3-(2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide.; A dry flask was charged with 1,5-Dimethyl-1H-pyrazole-4-carboxylic acid (0.144 g, 1.03 mmol) and thionyl chloride (5 mL) and allowed to stir at 79 C. for 3 h. The thionyl chloride was then removed by concentration in vacuo. The crude acid chloride was cooled to room temperature, and then dissolved in THF (101 mL). 6-(3-Amino-benzoyl)-1,3-dihydro-indol-2-one (as prepared in Example 40, 0.260 g, 1.03 mmol) was added to the THF solution of the acid chloride, and the mixture was allowed to reflux overnight. The reaction mixture was then allowed to cool to room temperature and filtered. The solid residue was washed with 0 C. THF and collected to afford the 1,5-Dimethyl-1H-pyrazole-4-carboxylic acid [3-(2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide as a solid (0.177 g, 0.47 mmol, 46%).
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 31728-75-3.