97586-06-6

Upstream product

• 2779-69-3 1,1-dichloro-2,2-diphenylethene 
• 101-81-5 Diphenylmethane 
• 72-55-9 1,1-bis(4-chlorophenyl)-2,2-dichloroethylene 
• 97586-33-9 1,1-dichloro-2,2-diphenylethene-4,4'-disulfonyl chloride 
• 90-98-2 4,4'-Dichlorobenzophenone 
• 97586-32-8 disodium benzophenone-4,4'-disulfonate 
• 3119-64-0 diphenylmethane-4,4'-disulfonyl chloride 
• 107774-90-3 4,4'-dichlorovinylidene-bis-benzenesulfonic acid diamide 
• 535-66-0 diphenylmethane-4,4'-disulfonamide 
• 18922-22-0 benzophenone-4,4'-disulfonyl chloride 

Relevant academic research and scientific papers

CHLOROSULFONATION OF SOME COMPOUNDS CONTAINING TWO PHENYL RINGS

Diphenylmethane (1) and dibenzyl (17) reacted with chlorosulphonic acid to give the corresponding p,p'-disulphonyl chlorides (2,18).However, attempted chlorosulfonations of α-chloro-, αα'-dichlorodiphenylmethane, stilbene and 1,4-diphenylbutadiene were unsuccessful.Diphenylacetic acid reacted with chlorosulfonic acid to give a mixture of 4,4'-dichlorosulfonylbenzophenone (40) and α-chlorodiphenylmethane-4,4'-disulfonyl chloride (39).Benzilic acid (41) afforded 9-chlorofluorene-2,7-disulfonyl chloride (42), which with amines gave 3 different products according to the reaction conditions.Fluorene (53) and the 9-carboxylic acid (43) have been treated with chlorosulfonic acid.The various sulfonyl chlorides were converted into 43 derivatives for biocidal evaluation.Mechanistic interpretations for the reactions is included.

SYNTHESIS OF BENZOPHENONE-4,4'-DISULFONYL CHLORIDE

Benzophenone-4.4'-disulfonyl chloride was synthesized from 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane, diphenylmethane-4,4'-disulfonyl chloride, or 1,1-dichloro-2,2-diphenylethene-4,4'-disulfonyl chloride by a series of consecutive reactions.