中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-溴苄醇 | 4-Bromobenzyl alcohol | 873-75-6 | C7H7BrO | 187.036 |
1-溴-4-((甲氧基甲氧基)甲基)苯 | 1-bromo-4-[(methoxymethyloxy)methyl]benzene | 130534-91-7 | C9H11BrO2 | 231.089 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-溴苄醇 | 4-Bromobenzyl alcohol | 873-75-6 | C7H7BrO | 187.036 |
—— | 4-tert-butylbenzyl formate | —— | C8H7BrO2 | 215.046 |
Structurally diverse alcohols and phenols were trimethylsilylated in a clean and efficient reaction with hexamethyldisilazane (HMDS) based on the use of a catalytic amount of N-bromosuccinimide under both dichloromethane and solvent-free conditions at room temperature. Deprotection of trimethylsilyl ethers was also be achieved efficiently in the presence of a catalytic amount of NBS in methanol at ambient temperature.Key words: N-bromosuccinimide, solvent-free, alcohols, phenols, hexamethyldisilazane, trimethylsilyl ether, catalyst, detrimethylsilylation.
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.