Diflubenzuron synthesis
- Product Name:Diflubenzuron
- CAS Number:35367-38-5
- Molecular formula:C14H9ClF2N2O2
- Molecular Weight:310.68
18063-03-1
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35367-38-5
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Yield:-
Reaction Conditions:
in 5,5-dimethyl-1,3-cyclohexadiene at 140; for 5 h;Large scale;Temperature;
Steps:
1-7 Example 1 of the present invention provides a synthesis process of diflubenzuron
Specifically: 576Kg of aromatic hydrocarbon solvent xylene is measured and then injected into the condensation reactor, Then add 157Kg 2,6-difluorobenzamide, The temperature was raised to 140°C and refluxed for 4h. After finishing, Cool down to 40 and start adding 148.7Kg p-chlorophenyl isocyanate dropwise, After the addition, the temperature was raised to 140°C and reacted for 5 hours. Cool down to 60, The crystal is filtered, washed with water, and dried for 8 hours to obtain the diflubenzuron product. The aromatic hydrocarbon solvent xylene is distilled and reused.
References:
CN112876384,2021,A Location in patent:Paragraph 0055-0068
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