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Identifiers | |||
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3D model (JSmol) | |||
ChemSpider | |||
ECHA InfoCard | 100.043.334 | ||
PubChem CID | |||
CompTox Dashboard (EPA) | |||
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Properties | |||
C5H5NSO3 | |||
Molar mass | 159.16 g/mol | ||
Appearance | white solid | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Sulfur trioxide pyridine complex is the compound with the formula C5H5NSO3. It is a colourless solid that dissolves in polar organic solvents. It is the adduct formed from the Lewis base pyridine and the Lewis acid sulfur trioxide. The compound is mainly used as a source of sulfur trioxide, for example in the synthesis of sulfate esters from alcohols: [1]
It also is useful for sulfamations:
The compound is used for sulfonylation reactions, especially in the sulfonylation of furans. [2] It is also an activating electrophile in a Parikh-Doering oxidation. [3]