Facile Preparation of Polymer-Supported Methyl Sulfonate and its Recyclable Use for Methylation of Carboxylic Acids and Amines

A simple and efficient one-pot procedure for the preparation of polymersupported methyl sulfonate from the reaction of polymer-supported sulfonic acid with trimethyl orthoacetate was achieved, and it could be successfully used for efficient methylation of carboxylic acids, phosphonic acids, sulfinic acids, amines, thiol, and phenol. Moreover, the polymer reagent could be recovered, regenerated, and reused easily for the same reactions.