7569-57-5

Upstream product

• 50-00-0 formaldehyd 
• 623-12-1 4-chloromethoxybenzene 
• 97-23-4 2,2'-methylenebis(4-chlorophenol) 
• 77-78-1 dimethyl sulfate 

Downstream Products

• 54308-39-3 bis(5-chloro-2-methoxyphenyl)methanone 
• 107943-36-2 5,5'-dichloro-2,2'-dimethoxy-4,4'-dinitro-benzophenone 
• 6178-89-8 5,5'-dichloro-2,2'-dihydroxybenzophenone 

Relevant academic research and scientific papers

Functional Ionic Liquids as Efficient and Recyclable Catalysts for the Methylation of Formaldehyde with Aromatics

Abstract: Methylation of formaldehyde with various aromatics under functional ionic liquids catalysis has been developed. Among the ionic liquids investigated, triphenyl-(4-sulfobutyl)-phosphonium triflate ([TTPBs][CF3SO3]) showed high activity and afforded excellent yields of diarylmethane derivatives. A mechanism for the catalytic performance of [TTPBs][CF3SO3] is proposed. Besides, the catalyst can simply be separated from the reaction mixture by centrifugation and be recycled ten times without noticeable loss of activity. Graphical Abstract: Diarylmethane derivatives were successfully synthesized from the methylation of formaldehyde with aromatics using efficient and recyclable functional ionic liquids as catalysts, excellent yields and selectivities were obtained under solvent free conditions. The catalyst was reused at least ten consecutive recycles without noticeable loss in its catalytic activity. Meanwhile, the usability of catalyst was explored.[Figure not available: see fulltext.]