61821-00-9

Upstream product

• 938-10-3 phenylsulfonyl azide 
• 86516-51-0 1-(4-methoxyphenyl)-2-tosylethanone 
• 2632-13-5 2-Bromo-4'-methoxyacetophenone 
• 824-79-3 sodium 4-methylbenzenesulfinate 

Downstream Products

• 61821-13-4 2-Ethoxy-1-(4-methoxy-phenyl)-2-(toluene-4-sulfonyl)-ethanone 
• 21160-14-5 p-Tolyl-<α-(4-methoxy-benzoyl)-α-methoxymethyl>-sulfon 

Relevant academic research and scientific papers

Copper Triflate Mediated α-Monohalogenation of α-Diazo β-Ketosulfones with Ammonium Halides

Copper triflate mediated α-monohalogenation of α-diazo β-ketosulfones with ammonium halides provides the corresponding α-halo β-ketosulfones. Different metal triflates are investigated for this facile and efficient transformation. A plausible mechanism is proposed.

Copper Acetate Mediated α-Oxysulfonylation of α-Diazo β-Ketosulfones

Copper acetate mediated α-oxysulfonylation of α-diazo β-ketosulfones in wet nitromethane under nitrogen provides α-oxysulfonyl β-ketosulfones. The use of different copper salts is investigated for the development of a facile and efficient transformation.

Synthesis of ionic liquid-supported sulfonyl azide and its application in diazotransfer reaction

The paper describes synthesis of a novel ionic liquid-supported sulfonyl azide and its applications as diazotransfer reagent of active methylene compounds as well as deformylative diazo transfer reagent. The diazo compounds were isolated in excellent yields (82-94%) and high purity. The method offers better separation of product and reagent. This method is experimentally simple and mild, and requires very short reaction time.