Methanol → Tetramethylammonium Methyl Carbonate

Participants

Reaction Conditions

Reaction Steps

To a 1.5 L autoclave equipped with a stirrer and a heating means were added 90 g (1.0 mol) of dimethyl carbonate, 59 g (1.0 mol) of trimethyl amine and 510 g (15 mol) of methanol. Stirring was initiated after the autoclave was sealed. The autoclave was heat to 140° C., and pressure was 1.5 MPa. The reaction was kept at 140° C. for 4 h. Then the reaction mixture was cooled to 50° C. and discharged into a 1 L three-necked flask. Part of methanol was removed from the solution of tetramethyl ammonium methyl-carbonate in methanol thus obtained under vacuum, and then the solution was cooled to ambient temperature. White crystal precipitated out. The crystal was filtrated, oven dried and re-crystallized from methanol, to give 119.5 g of tetramethylammonium methyl-carbonate having a purity of 99.2% as measured by chromatography. The yield was 80.2%.

Provenance & Evidence