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Key Documents

281077

Sigma-Aldrich

Trimethyloxonium tetrafluoroborate

95%

Synonym(s):

Trimethyloxonium fluoroborate

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About This Item

Linear Formula:
(CH3)3O(BF4)
CAS Number:
Molecular Weight:
147.91
Beilstein:
3597303
EC Number:
MDL number:
UNSPSC Code:
12352107
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

95%

form

solid

functional group

ether

storage temp.

−20°C

SMILES string

C[O+](C)C.F[B-](F)(F)F

InChI

1S/C3H9O.BF4/c1-4(2)3;2-1(3,4)5/h1-3H3;/q+1;-1

InChI key

CZVZBKHWOFJNCR-UHFFFAOYSA-N

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General description

Trimethyloxonium tetrafluoroborate can be used as a methylating agent for the methylation of hydroxyl/carboxyl functional groups. It is capable of methylating polyfunctional carboxylic acids. It is also used as a catalyst for the polymerization of cyclic sulfides and ethers.

Application

Reagent for the methylation of hydroxyl groups recently used in a complex, multistep synthesis directed towards spirastrellolide, a marine natural product.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B

Supplementary Hazards

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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