Solid-Supported Acids as Mild and Versatile Reagents for the Deprotection of Aromatic Ethers
作者:Poonsakdi Ploypradith、Pannarin Cheryklin、Nattisa Niyomtham、Daniel R. Bertoni、Somsak Ruchirawat
DOI:10.1021/ol070781+
日期:2007.7.1
p-Toluene sulfonic acid (p-TsOH) immobilized either on polystyrene (PS) or silica (Si) was found to be effective in cleaving aromatic ethers containing isopropyl, tert-butyl, allyl, and benzyl groups, as well as mono-, di-, and trimethoxylated benzyl groups, in moderate to excellent yields (54-95%). These protecting groups could be selectively deprotected when they were simultaneously present on the
发现固定在聚苯乙烯(PS)或二氧化硅(Si)上的对甲苯磺酸(p-TsOH)可有效裂解含异丙基,叔丁基,烯丙基和苄基以及单-,二甲氧基和三甲氧基化的苄基,收率中等至极佳(54-95%)。当这些保护基同时存在于基质中相同或不同的芳环上时,它们可以被选择性地脱保护。