Pyridine Sulfur Trioxide
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:
ROH + C5H5NSO3 → [C5H5NH]+[ROSO3]−
It is also an activating electrophile in a Parikh-Doering oxidation.
Chinese Name: Thiopidine trioxide
Chinese synonyms: compounds of thiopidine trioxide; sulfur trioxide-pyridine complex; Pyridine sulfur trioxide; Thiopidine trioxide; Thiopidine trioxide complex; Synthesis of thiophorine trioxide; Sulfur trioxide yridine complex; Sulfurtrioxypyridine complex [2]
English name: Pyridine sulfur trioxide
English synonyms: Pyridine, compd.withsulfurtrioxide (1:1); Salfurtrioxidepyri-dinecomplex; Sulfurtrioxide,compd.withpyridine(1:1); (DIMETHYLAMINOMETHYL) STYRENE; VINYLBENZYLDIMETHYLAMINE; N,N-DIMETHYLVINYLBENZYLAMINE; POLY(4-VINYLPYRIDINE) SULFUR TRIOXIDE COMPLEX; N-(4-VINYLBENZYL)-N,N-DIMETHYL AMINE
Molecular weight: 159.16
EINECS number: 247-683-3
Mol file: 26412-87-3.mol
Pyridine sulfur trioxide complex >97.0%
Intermediate of sodium sugar anhydride.
It is generally used as a sulfonating agent, with mild reaction and stable properties; In the field of biopharmaceuticals, it is often used as an organic oxidant and sulfatesating agent.
Special sulfonation reagents are used for sulfonation reactions of furans, pyridines, etc.
Used as oxidant and sulfonating agent.
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