250592-91-7

Basic information

• Product Name: 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole
• Synonyms: 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole;Isoxazole, 4,5-dihydro-3-[2-methyl-6-(methylthio)phenyl]-
• CAS NO: 250592-91-7
• Molecular Formula: C₁₁H₁₃NOS
• Molecular Weight: 207.29200
• Mol File: 250592-91-7.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 306.0±52.0 °C(Predicted)
• Density: 1.17±0.1 g/cm3(Predicted)
• CAS DataBase Reference: 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole(CAS DataBase Reference)
• NIST Chemistry Reference: 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole(250592-91-7)
• EPA Substance Registry System: 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole(250592-91-7)

Safety Data

• Hazardous Substances Data: 250592-91-7(Hazardous Substances Data)

Upstream product

• 250592-89-3 3-(2-methyl-6-aminophenyl)-4,5-dihydroisoxazole 
• 544-16-1 n-Butyl nitrite 
• 540-80-7 tert.-butylnitrite 
• 624-92-0 Dimethyldisulphide 
• 83-41-0 2,3-dimethylnitrobenzene 
• 250592-88-2 3-((2-methyl)-6-nitrophenyl)-4,5-dihydroisoxazole 

Downstream Products

• 210631-68-8 topramezone 
• 223646-24-0 3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid 

Relevant articles and documents

Method for recycling byproducts in synthesis of diphenyl sulfide compound

The invention provides a method for recycling byproducts in synthesis of a diphenyl sulfide compound. The byproducts comprise alkyl alcohol and dimethyl disulfide. The method comprises the steps of (1) mixing the byproducts in synthesis of the diphenyl sulfide compound with a sodium nitrite aqueous solution, adding concentrated hydrochloric acid for reaction, and obtaining alkyl nitrite and dimethyl disulfide; and (2) mixing the products obtained in the step (1) with copper powder, adding an aniline compound for reaction, carrying out desolvation treatment on the obtained reaction solution toobtain a diphenyl sulfide compound and byproducts, and returning the byproducts to the step (1). According to the recycling method, the byproducts do not need to be separated, the byproducts serve asraw materials to be directly applied to synthesis of the diphenyl sulfide compound, the process steps are simple and safe, cyclic utilization of the materials is achieved, and the raw material cost ofindustrial production of the diphenyl sulfide compound and the treatment cost of industrial three wastes are remarkably reduced.

Improved method for preparing topramezone

The invention discloses an improved method for preparing topramezone and belongs to the technical field of chemical synthesis. The improved method takes 3-nitro-o-xylene as a raw material and is characterized in that the topramezone is obtained through oximation reaction, ethylene cyclization, palladium carbon reduction, diazotization, aldehydelation, oxidation and condensation rearrangement reaction; under optimal conditions, the total yield is 33.7 percent, the raw material is cheap and easy to obtain, the treatment is convenient in the whole process, the yield is relatively high, and a certain significance in industrialized production is realized.