SYNTHESIS AND HYDROSILYLATION REACTIONS OF ALLYL METHACRYLATE

A convenient synthesis of allyl methacrylate (AMA) has been developed by the transesterification reaction of methyl methacrylate (MMA) and allyl alcohol (AA). The reactions were carried out in presence of acid catalysts such as perchloric acid, sulphuric acid or p-toluenesulphonic acid either in presence of molecular sieves-5A (80-degrees-C) or under pressure in a sealed tube (90, 100 or 120-degrees-C). Further, the hydrosilylation reaction of AMA with trichlorosilane in presence of Speier's catalyst afforded gamma-methacryloxypropyltrichlorosilane (I) in good yields (approximately 80%). The reaction of (I) with sodium methoxide in benzene solution using 18-Crown-6 as PTC yielded gamma-methacryloxypropyltrimethoxysilane in approximately 85% yield.