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ChemicalBook--->CAS DataBase List--->2471-91-2

2471-91-2

2471-91-2 Structure

2471-91-2 Structure
IdentificationBack Directory
[Name]

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide
[CAS]

2471-91-2
[Synonyms]

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide
1,3-dihydro-2-benzothiophene 2,2-dioxide
1,3-Dihydro-2λ6-benzothiophene-2,2-dione
Benzo[c]thiophene, 1,3-dihydro-, 2,2-dioxide
[Molecular Formula]

C8H8O2S
[MDL Number]

MFCD00209307
[MOL File]

2471-91-2.mol
[Molecular Weight]

168.21
Chemical PropertiesBack Directory
[Melting point ]

150-151 °C.
[solubility ]

sol EtOH, CHCl3, C6H6, boiling water; slightly sol Et2O.
[CAS DataBase Reference]

2471-91-2
Hazard InformationBack Directory
[Uses]

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide is a source of o-quinodimethanes that are useful diene intermediates in Diels-Alder reactions; a source of benzocyclobutene.
[Synthesis]

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide is prepared by oxidation of 1,3-dihydrobenzo[c]thiophene; from α,α′-Dibromo-o-xylene, rongalite (Sodium Hydroxymethanesulfinate, HOCH2SO2Na.2H2O), and Sulfur Dioxide.
[storage]

unstable to alkali and concentrated H2SO4.
Spectrum DetailBack Directory
[Spectrum Detail]

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide(2471-91-2)MS
1,3-Dihydrobenzo[c]thiophene 2,2-dioxide(2471-91-2)1HNMR
1,3-Dihydrobenzo[c]thiophene 2,2-dioxide(2471-91-2)13CNMR
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