src: www.degruyter.com
Trimethyloxonium tetrafluoroborate is the organic compound with the formula Me3OBF4. It is sometimes called the "Meerwein salt" after Hans Meerwein.) This salt is a strong methylating agent, being a source of CH3+. It is a white solid. Triethyloxonium tetrafluoroborate is a closely related reagent.
Video Trimethyloxonium tetrafluoroborate
Preparation and reactions
The compound is prepared by the reaction of boron trifluoride with dimethyl ether and epichlorohydrin:
- 4 Me2O·BF3 + 2 Me2O + 3 C2H3(O)CH2Cl -> 3 Me3O+BF-
4 + B[(OCH(CH2Cl)CH2OMe]3
The salt hydrolyzes readily:
- Me3OBF4 + H2O -> Me2O + MeOH + HBF4
Trimethyloxonium tetrafluoroborate is often ranked as the strongest reagent for the electrophilic methylation.
Maps Trimethyloxonium tetrafluoroborate
References
Source of the article : Wikipedia
0 Comments