4371-25-9

Basic information

• Product Name: dibenz<1,2>oxathiin 6,6-dioxide
• Synonyms: dibenz<1,2>oxathiin 6,6-dioxide
• CAS NO: 4371-25-9
• Molecular Weight: 232.26
• Mol File: 4371-25-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: dibenz<1,2>oxathiin 6,6-dioxide(CAS DataBase Reference)
• NIST Chemistry Reference: dibenz<1,2>oxathiin 6,6-dioxide(4371-25-9)
• EPA Substance Registry System: dibenz<1,2>oxathiin 6,6-dioxide(4371-25-9)

Safety Data

• Hazardous Substances Data: 4371-25-9(Hazardous Substances Data)

Upstream product

• 132-65-0 dibenzothiophene 
• 1016-05-3 dibenzothiophene sulfone 

Relevant articles and documents

Oxidation of dibenzothiophene by hydrogen peroxide or monopersulfate and metal-sulfophthalocyanine catalysts: An easy access to biphenylsultone or 2-(2′-hydroxybiphenyl)sulfonate under mild conditions

A catalytic system consisting of metal-sulfophthalocyanines (MPcS) and monopersulfate or hydrogen peroxide as oxidants was effective in the dibenzothiophene oxidative desulfurization with various yields and selectivities. Oxidations were conducted at room temperature in acetonitrile-water mixed solvent. The dibenzothiophene oxidation involved the step by step formation of dibenzothiophene dioxide and biphenylsultone (dibenzo-1,2-oxathiine 2,2-dioxide), followed by hydrolysis to 2(2′-hydroxybiphenyl)sulfonate and finally catalytic desulfurization to 2-hydroxybiphenyl (2-phenylphenol) and sulfuric acid; all the intermediate compounds were identified. Moreover, catalytic over-oxidation of 2-hydroxybiphenyl, with ring fission and formation of various oxidation products, among them carbon dioxide, oxalic and benzoic acid, was also observed. Among the various MPcS catalysts examined (M = Fe, Co and Ru), the ruthenium derivative exhibited the best performances with persulfate and iron derivative with hydrogen peroxide; in both cases the slow step of the process consisted in the oxidation of dibenzothiophene dioxide to biphenylsultone.