901762

Tris(dimethylamino)sulfonium bifluoride

• Synonym(s): (Me₂N)₃S⁺[FHF]^–, Bifluoride salt SuFEx catalyst
• Empirical Formula (Hill Notation): C₆H₁₉F₂N₃S
• CAS Number: 85248-37-9
• Molecular Weight: 203.30
• UNSPSC Code: 12352101

Properties

• form: powder or solid
• reaction suitability: reagent type: catalyst; reaction type: Fluorinations
• greener alternative product characteristics: Catalysis; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• greener alternative category: , Aligned
• storage temp.: 2-8°C

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalytic efficiency. Click here for more information.

Application

Bifluoride salt reported by K. Barry Sharpless and colleagues as a powerful catalyst for the sulfur(VI) fluoride exchange (SuFEx) reaction between aryl silyl ethers and aryl fluorosulfates or alkyl sulfonyl fluorides. Superior to organosuperbases DBU and BEMP, tris(dimethylamino)sulfonium bifluoride enables low catalyst loading (0.05 mol%) for preparation of polysulfates and polysulfonates with high molecular weight and narrow polydispersity. Reaction is amenable to scale up.

Other Notes

Bifluoride-catalysed sulfur(VI) fluoride exchange reaction for the synthesis of polysulfates and polysulfonates

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable