We have evaluated the potential of using tetramethylammonium chloride (Me4NCl) as an alternative methylating agent for phenols under microwave-assisted conditions. Its chemical behavior was tested in a reaction with 2-naphthol in the presence of various bases and solvents. The method was then applied in 1, 2-dimethoxyethane or toluene under heterogeneous conditions for the O-methylation of a series of phenolic compounds. We ...