Thiophene, Tetrahydro-, 1,1-dioxide

Thiodan Dust Insxticide 1569 Thiophene, tetrahydro-, 1,1-dioxide 3616... [Pg.1106]

The single-step oxidation of benzene to phenol without coproduct formation is a great industrial challenge. Currently, phenol is produced by the Cumene process, which also yields stoichiometric amounts of acetone. However, there are recent developments in the oxidation of benzene to phenol with aqueous hydroperoxides as oxidants, TS-1 as the catalyst, and sulfolane (thiophene, tetrahydro, 1,1-dioxide) as a cosolvent (204b). [Pg.73]

SYNS CP 78601 DAC649 TETRAHYDRO-3,3,4,4-TETRACHLOROTHIOPHENE 1,1-DIOXIDE THIOPHENE, TETRAHYDRO-3,3,4,4-TETRACHLORO-,... [Pg.1314]

Decyloxysutfolane 3-(Decyloxy)tetrahydrothiophene 1,1-dioxide EINECS 242-556-9 Tetrahydro-3-(decyl-oxy)thiophene 1,1-dioxide Thiophene, 3-(decyloxy)-tetrahydro-, 1.1-dioxide Thiophene, tetrahydro-3-(decyloxy)-, 1,1-dioxide. [Pg.180]

Tetrahydro-thiophen-l,l-dioxidc werden als Anionen von Lithiumalanat unter Ringverengung zu Cyclo-butenen reduziert3. 3,4-Dihydro-thiophen-1,1 -dioxide liefern dagegen offenkettige Diene4. [Pg.451]

Oxidation of thiophene and its derivatives was studied using hydrogen peroxide (H2O2), t-butyl-hydroperoxide and Ti-Beta redox molecular sieve as selective oxidation catalysts. A new reaction pathway was discovered and investigated using C-13 NMR, GC, GC-MS, HPLC, ion chromatography, and XANES. The thiophene oxidized to thiophene-sesquioxide [3a,4,7,7a-tetrahydro-4,7-epithiobenzo[b]-thiophene 1,1.8-trioxide] and the sesquioxide oxidized mostly to sulfate. 2-Methyl-thiophene and 2,5 dimethylthiophene also oxidized to sulfate and sulfone products. The Benzothiophene oxidation product was sulfone. This proposed new reaction pathway is different from prior literature, which reported the formation of thiophene 1,1-dioxide (sulfone ) as a stable oxidation product... [Pg.263]

Dibenzothiophene, 1,2,3,4-tetrahydro-4-keto-synthesis, 4, 905 Dibenzo thiophenes alkylation, 4, 724 Birch reduction, 4, 775 13C NMR, 4, 11 5,5-dioxides... [Pg.603]

Thiophene 1,1-dioxide with a shielded sulfur atom was hydrogenated without difficulty to the tetrahydro derivative, sulfolane, over palladium catalyst in acetic acid at room temperature and atmospheric hydrogen pressure (eq. 12.121).249... [Pg.563]

Methoxycarbonyl-ethyl)-methyl-E13/2, 1325 (S-Oxygenierung) Thiophen 3-Methoxy-tetrahydro- -1,1-dioxid VI/3, 24... [Pg.228]

Hydroxy-3-oxo- 2,5-bis-[3,4-dimethyl-pheny]]-tetrahydro- -1,1-dioxid aus 3-Hydroxy-4-oxo-2,5-bis-[3,4-dimethyl-phenyl]-4,5-dihydro-thiophen- 1,1-dioxid durch Reduktion mit Zn 710... [Pg.841]

Sulfolane Sulfolane-W Tetrahydro-thiophene-1,1-Dioxide Tetramethylene Sulfone ... [Pg.258]

Dihydrubutadiene sulfone Dihydrobutadiene sulphone Dioxothiolan EINECS 204-7861 HSDB 122 NSC 46443 Sulfalone Sulfolan Sulfolane Sulpholane Sulphoxaline Tetrahydrothiofen-1,1-dioxid Tetrahydrothiophene dioxide Tetrahydro-thiophene 1,1-dioxide Tetramethylene sulfone Thia-cyclopentane dioxide Thiocyclopentane-1,1-dioxide Thiolane-1,1-dioxide Thiophan sulfone Thiophane dioxide Thiophene, tetrahydno-, 1,1-dioxide. Solid mp = 27,6° bp = 287.3° d = 1,2723 soluble in CH03. [Pg.593]

Thiacyclopentadiene. See Thiophene Thiacyclopentane. See Tetrahydrothiophene Thiacyclopentane dioxide. See Sulfolane 2H-1,3,5-Thiadiazine-2-thione, tetrahydro-3,5-dimethyl-. See 3,5-Dimethyl tetrahydro-2-H,1,3,5-thiadiazone-2-thione... [Pg.4405]

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