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With sodium methylate; In methanol; at 30℃; under 50 Torr; for 2h;
Experiment 1c. tetrahydropyran-2-ol (74 g, 0.72 mol) and 3-methacryloxypropyltrimethoxysilane (60 g, 0.24 mol) where reacted with stirring in the presence of a methanol solution of NaOMe (1 g, 0.5 M) for 2 h at 30 C. and reduced pressure (50 Torr).methanol formed in the reaction and from the NaOMe solution were distilled and the reaction product neutralized with HCl. The 3-methacryloxypropylsilane tri-acetal monomer was obtained as a colorless liquid in high purity by 1H-NMR, 13C-NMR, 29Si-NMR.