反应详情

温度

5 °C

A mixture of 1,3-dimethyl-1H-indazole-4,5-dicarboxylic acid (6.30 g, 26.9 mmol) and acetic anhydride is stirred at reflux temperature for 3 hours, cooled to 5° C. and filtered The filter cake is air-dried to give the title product as chartreuse needles (4.80 g, 82.5%), mp 214°-215.5° C.

1. temperatureat reflux temperature for 3 hours
2. filtrationfiltered The filter cake
3. customis air-dried