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]
| |||
Identifiers | |||
---|---|---|---|
| |||
3D model (JSmol)
|
| ||
ChemSpider |
| ||
ECHA InfoCard | 100.043.334 | ||
PubChem CID
|
| ||
CompTox Dashboard (EPA)
|
| ||
| |||
| |||
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).
verify (what is ?)
Infobox references
|
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]