Yield:5686-93-1 80 %

Reaction Conditions:

with 0.1% Cu2O/modified titanium dioxide in acetonitrile;UV-irradiation;Reagent/catalyst;Solvent;

Steps:

1-20 Example 17

0.1% Cu2O/TiO2 catalyst was obtained by the following process:Get 1.0g titanium dioxide nanoparticles (mass ratio: rutile phase 20%, anatase phase 80%), join in 30mL absolute methanol,Add a certain amount of copper chloride, wherein the mass of copper is 0.1% of the mass of titanium dioxide relative to the mass of titanium dioxide. After stirring evenly, transfer it to a quartz kettle, and replace it with CO for 3 times.Under normal pressure and CO atmosphere,40W UV 365nm irradiation for 2h for photodeposition,Then washed 3 times with water, placed in a vacuum oven at 60°C for 12 hours,Collected under an inert (argon) atmosphere0.1% Cu2O/TiO2 catalyst.Get 0.1% Cu2O/TiO2 catalyst that above-mentioned 10mg makes,Join in the anthranilamide-acetonitrile solution that 1ml anthranilamide mass percentage content is 20%, after removing the oxygen in the system,Turn on the 18W ultraviolet LED lamp, and carry out the photocatalytic reaction under the condition of ultraviolet light source 365nm for 72h. After the reaction solution was filtered,Gas chromatographic analysis shows that the conversion rate of anthranilamide is 96%, and the selectivity of 3-indazolinone is 83%,The yield of 3-indazolinone was 80%.

References:

CN115160228,2022,A Location in patent:Paragraph 0016-0055