Synthesis of Methylphenyldimethoxysilane via In-Situ Grignard Reaction
Methylphenyldimethoxysilane[MePhSi(OMe)2]were synthesized in one step with chlorobenzene(PhCl),mag-nesium(Mg)power,and methyltrimethoxysilane(MTMS)as the raw materials,and methyltrichlorosilane(MTCS)as accelerator via in-situ Grignard reaction.The factors which influencing the yield of the products were explored and the optimum parameters for the reaction were determined in orthogonal experiment.The results indicate that when the molar ratio of Mg,PhCl,MTMS,and MTCS is1.0∶1.4∶2.5∶0.3,the reflux reaction time is8 hours,the synthetic yield of methylphenyldimethoxysilane is78%.
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