dimetylosulfat
Dimethyl sulfate, with the formula C2H6SO4, is a sulfonate ester derived from sulfuric acid in which both hydroxyl groups are replaced by methyl groups. It is a colorless to pale yellow, viscous liquid that is volatile at room temperature and has a strong, penetrating odor. It is highly reactive as a methylating agent and is used to introduce methyl groups into a range of substrates, including phenols, carboxylic acids as methyl esters, and amines.
In organic synthesis, dimethyl sulfate transfers a methyl group to nucleophiles, yielding methyl ethers or methylated
Dimethyl sulfate is moisture sensitive; on contact with water it hydrolyzes to methanol and sulfuric acid:
(CH3O)2SO2 + 2 H2O → 2 CH3OH + H2SO4
Because of its extreme toxicity and potential risks to health, dimethyl sulfate is subject to regulation and