23721-53-1

Basic information

• Product Name: 4,4'-(λ⁴-sulfanediylidenediamino)-bis-benzoic acid diethyl ester
• Synonyms: 4,4'-(λ⁴-sulfanediylidenediamino)-bis-benzoic acid diethyl ester
• CAS NO: 23721-53-1
• Molecular Weight: 358.418
• Mol File: 23721-53-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4,4'-(λ⁴-sulfanediylidenediamino)-bis-benzoic acid diethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-(λ⁴-sulfanediylidenediamino)-bis-benzoic acid diethyl ester(23721-53-1)
• EPA Substance Registry System: 4,4'-(λ⁴-sulfanediylidenediamino)-bis-benzoic acid diethyl ester(23721-53-1)

Safety Data

• Hazardous Substances Data: 23721-53-1(Hazardous Substances Data)

Upstream product

• 23721-51-9 4-sulfinylamino-benzoic acid ethyl ester 

Downstream Products

• 60-29-7 diethyl ether 
• 70-29-1 diethyl sulphide 
• 94-09-7 p-aminoethylbenzoate 
• 23988-46-7 4,4'-(4-oxo-3,3-diphenyl-[1,2,5]thiadiazolidine-2,5-diyl)-bis-benzoic acid diethyl ester 

Relevant articles and documents

SOME KINETIC ASPECTS OF THE ALCOHOLYSIS OF N,N'-DIARYLSULPHURDIIMIDES

Kinetic determinations (at 22 deg C) show that the ethanolysis of N,N'-diarylsulphurdiimides 1 - 9, catalysed by anhydrous copper(II) chloride, obeys a first-order rate law with respect to N,N'-diarylsulphurdiimide.The logarithm of the observed first-order rate constants (at the same concentration of the catalyst) can be correlated with the Hammett ? substituent constants.The ethanolysis rate of 1 - 9 is increased by the electron-withdrawing effect of the substituents linked to the aromatic rings of N,N'-diarylsulphurdiimide.The observed first-order rate constant of the CuCl2-catalysed ethanolysis of N,N'-bis(p-tolyl)sulphurdiimide, 3, is directly proportional to the catalyst concentration: kobs = k2.The second-order rate constants, k2, of the alcoholysis of 3 were measured in four alcohols different from ethanol.These constants seem to be a function of the polarity of the reaction medium and of the steric hindrance of the alcohol.Finally, it was ascertained that the catalysing power of CuCl2 in the ethanolysis of 3 is higher than that of NiCl2 and CoCl2.