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CAS 26412-87-3

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.

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CAS:26412-87-3

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 complicated [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 complicated >97.0%

Intermediate of sodium sugar anhydride.

It is usually used as a sulfonating agent, with slight response and steady properties; In the discipline of biopharmaceuticals, it is frequently used as an natural oxidant and sulfatesating agent.

Special sulfonation reagents are used for sulfonation reactions of furans, pyridines, etc.

Used as oxidant and sulfonating agent.

CAS:26412-87-3