713-33-7Relevant articles and documents
A method for preparing chlorine Shu Long
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Paragraph 0026; 0031; 0032, (2017/02/17)
The invention discloses a preparation method of clorsulon. The preparation method comprises the steps: carrying out condensation on m-nitrobenzaldehyde with chloroform at a low temperature, then chloridizing, and carrying out elimination, hydrazine hydrate reduction, chlorosulfuric acid sulphonation and ammonification to obtain clorsulon. The use of benzene with relatively high toxicity is avoided, the use of chlorine with relatively large dangerousness is also avoided, the reduction reaction adopts more environmentally-friendly hydrazine hydrate, hydrazine hydrate reduction has less solid waste than iron powder reduction, an excellent catalyst ferric trichloride and an activated carbon carrier are selected, a by-product nitrogen gas has a good protective effect on the product, the product quality is high, the yield is equivalent to the yield reported in literature, the process is simplified, reaction conditions are mild, and the preparation method is environmentally friendly and has good industrial application prospects.
Hydrogenation of 3-trichlorovinylnitrobenzene
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, (2008/06/13)
There is disclosed a process for the conversion of 3-trichlorovinylnitrobenzene to 3-trichlorovinylaniline by catalytic reduction in an alcoholic acidic medium, using a supported palladium catalyst in a hydrogen atmosphere. The process is carried out with
