- Triphenylsulfonium Bromide
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- $0.00 / 1kg
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2023-05-12
- CAS:3353-89-7
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: according to customer's requirements
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| | Triphenylsulfonium Bromide Basic information |
| | Triphenylsulfonium Bromide Chemical Properties |
| Melting point | 293 °C | | form | powder to crystal | | color | White to Almost white | | CAS DataBase Reference | 3353-89-7 |
| | Triphenylsulfonium Bromide Usage And Synthesis |
| Uses | Triphenylsulfonium Bromide is used in the preparation of sulfonium salt photoacid generator for deep-UV microlithography. | | Preparation | Triphenylsulfonium bromide synthesis: A 3.0 M solution of phenylmagnesium bromide in diethyl ether (50 ml, 0.15 mole) was distilled under vacuum with slow heating from 20° to 80°C. Benzene (40 ml) was added, followed by n-heptane (300 ml). The resulting mixture was stirred and a solution of diphenylsulfoxide 10.1 g, (0.050 mol), in benzene (60 ml) was added during 1 hour at 80°C. The mixture was stirred for 3 hours and cooled to room temperature. An 25% aqueous hydrobromic acid solution (180 ml) was slowly added to the reaction mixture (exotherm-). The layers were separated and the organic layer was extracted twice with 5% aqueous hydrobromic acid (2 x 30 ml). The combined aqueous extracts were extracted three times with dichloromethane (3×250 ml). The dichloromethane extracts were dried over magnesium sulfate, filtered and the organic solvent evaporated to leave triphenylsulfonium bromide (10.2 g, 60%), which was crystallized from dichloromethane/diethyl ether. M.p. 285-7°C. |
| | Triphenylsulfonium Bromide Preparation Products And Raw materials |
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