A very efficient procedure for the protection of alcohols and phenols is presented. The mixture of 1,1,1,3,3,3-hexamethyldisilazane (HMDS) and catalytic amounts of poly(4-vinylpyridinium tribromide) was found to be effective for the trimethylsilylation of alcohols and phenols. Protection reaction is very simple and performs heterogeneously in acetonitrile at room temperature under mild conditions.
一种非常高效的醇和酚保护程序被提出。发现1,1,1,3,3,3-六甲基二硅氮烷(HMDS)与聚(4-乙烯吡啶三溴化物)的催化量混合物对醇和酚的三甲基硅基化是有效的。保护反应非常简单,在室温下在乙腈中以温和条件异相进行。