Methalloporphirins Catalyze Regio and Chemoselective Silylation of Hydroxy Groups with Hexamethyldisilazane (HMDS)
نویسندگان
چکیده مقاله:
Metalloporphirins; Cu(TPP), Mn(TPP)Cl, CO(TPP), Fe(TPP)Cl, zn(TPP) and Mn(OBP)Cl catalyze region and chemoselective silylation of hydroxyl groups with HMDS. Fe(TPP)Cl is the most effective catalyst and silylation occurs immediately in its presence at room temperature.
منابع مشابه
methalloporphirins catalyze regio and chemoselective silylation of hydroxy groups with hexamethyldisilazane (hmds)
metalloporphirins; cu(tpp), mn(tpp)cl, co(tpp), fe(tpp)cl, zn(tpp) and mn(obp)cl catalyze region and chemoselective silylation of hydroxyl groups with hmds. fe(tpp)cl is the most effective catalyst and silylation occurs immediately in its presence at room temperature.
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15 صفحه اولSilylation of alcohols and phenols by HMDS in the presence of ionic liquid and silica-supported ionic liquids
In this research, different alcohols and phenols are subjected to the reaction with HMDS in the presence of ionic liquid and silica-supported catalysts. Silylation was accomplished under mild reaction conditions at room temperature in short reaction times and good to excellent yields.
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Trimethylsilylation of a variety of alcohols and phenols, in the presence of silica chloride, using hexamethyldisilazane (HMDS) in solution and under solvent-free conditions is reported. Trimethylsilyl ethers were formed in excellent yields both for aliphatic alcohols and phenols without having an electron-withdrawing group. In addition, SiO2-Cl can be recovered and reused after drying.
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عنوان ژورنال
دوره 15 شماره 2
صفحات 54- 56
تاریخ انتشار 1996-12-01
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