#$%^&*AU2020101088A420200723.pdf#####Abstract A process method for producing pesticide by using carbon dioxide comprises the following steps: Weighing 1, 3-cyclohexanedione substrate, catalyst and Cs2CO3 in Schleck bottle, degassing, and continuously introducing latm of carbon dioxide. Add solvent and react for 48h in an oil bath at 50°C. After the reaction was completed, post-treatment was carried out to obtain 2(a-e) . The obtained acid is acylated and then added dropwise to dichloromethane solution containing aniline to react for 2h at normal temperature. After the reaction, column chromatography was performed to obtain 3(a-e) . Add 3 (a-e) into 50% concentrated sulfuric acid and reflux at 80°C for 8 hours. Through separation, 4(a-e) was obtained. The invention has the advantages that the catalyst is simple to prepare, has high catalytic activity, can be recycled, realizes industrial circulation, and achieves the goal of sustainable production. The preparation process of 3( a-e) and 4 (a-e) is simple, with low requirements on equipment, wide sources of raw materials, low cost, low toxicity and easy industrial scale-up production.Drawings of Description 00 OH O HNN I C02 Catalysts, Cs2CO3 R O anlin 0 RA O R 'OH R N 1(a-e) 2(a-e) H14 0 0 0 0 0 OH OH IOH "-OH - AOH Ia lb le Id le Figure1I 0OHNOI；- 0 0 X 0 H2SO4,(50%/)N" R N R - OH 3(a-e) 4(a-e) Figure 2 1/1
