80988-11-0

Upstream product

• 141212-57-9 5-p-(p-chlorophenylsulphonyl)phenyl-3-mercapto-1,2,4-triazole 
• 623-00-7 4-bromobenzenecarbonitrile 
• 14752-66-0 sodium p-chlorobenzenesulphinate 
• 96461-81-3 4-((4- chlorophenyl) thio) benzo nitrile 
• 68018-54-2 4‐[(4‐chlorophenyl)sulfonyl]benzoyl chloride 
• 80988-09-6 4-(4-chloro-benzenesulfonyl)-benzoic acid amide 

Relevant academic research and scientific papers

Ceramic boron carbonitrides for unlocking organic halides with visible light

Photochemistry provides a sustainable pathway for organic transformations by inducing radical intermediates from substrates through electron transfer process. However, progress is limited by heterogeneous photocatalysts that are required to be efficient, stable, and inexpensive for long-term operation with easy recyclability and product separation. Here, we report that boron carbonitride (BCN) ceramics are such a system and can reduce organic halides, including (het)aryl and alkyl halides, with visible light irradiation. Cross-coupling of halides to afford new C-H, C-C, and C-S bonds can proceed at ambient reaction conditions. Hydrogen, (het)aryl, and sulfonyl groups were introduced into the arenes and heteroarenes at the designed positions by means of mesolytic C-X (carbon-halogen) bond cleavage in the absence of any metal-based catalysts or ligands. BCN can be used not only for half reactions, like reduction reactions with a sacrificial agent, but also redox reactions through oxidative and reductive interfacial electron transfer. The BCN photocatalyst shows tolerance to different substituents and conserved activity after five recycles. The apparent metal-free system opens new opportunities for a wide range of organic catalysts using light energy and sustainable materials, which are metal-free, inexpensive and stable. This journal is

Oxidation of Aryl Sulfides to Sulfones with Alumina-Supported Ruthenium Catalyst in Dimethyl Carbonate-Water Media

A new procedure for the oxidation of sulfides to sulfones utilizing heterogeneous ruthenium reagent has been developed. A small amount of ruthenium trichloride (RuCl3) supported on alumina and excess sodium metaperiodate (NaIO4) was used to produce the ruthenium oxidizing catalyst in the reaction mixture. Sodium metaperiodate oxidized the pre-catalyst RuCl3 to RuO4 and also maintained a constant supply of RuO4 by oxidizing lower valent ruthenium ions during the course of the reaction. An environmentally friendly solvent mixture of dimethyl carbonate (DMC) and water was employed. A wide variety of aromatic sulfides were oxidized to sulfones in good to excellent yields by utilizing this procedure.

Metal and solvent free selective oxidation of sulfides to sulfone using bifunctional ionic liquid [pmim]IO4

The oxidation of organo-sulfides to sulfones has been accomplished using an easily accessible bifunctional ionic liquid, [pmim]IO4 in the absence of any other oxidants, metal and organic solvent at ambient temperature. A variety of sulfides including dialkyl, aryl-alkyl, diaryl, and aryl-hetero aryl have been oxidized to the corresponding functionalized sulfones in high yields by this procedure.

Flow-vacuum pyrolysis of polycyclic compounds. 251. Pyrolysis of some 3-mercapto-5-substituted-1,2,4-triazoles

The flow-vacuum pyrolysis (FVP) of the 3-mercapto-5-substituted-1,2,4- triazoles 5a-c, between 475°C - 750°C, at 2 mm Hg, in inert atmosphere (4mL/min argon flow rate) and quartz pyrolysis tube (60 cm length, 1 cm internal diameter, quartz chips filling 30 mm long) afforded a complex mixture with cyano-diphenyl-sulphones 12a-c and corresponding diphenylsulphones 13a-c as main products. The reaction products were identified by GC/MS. A radical mechanism is suggested in order to explain the formation of the main reaction products.