作者:J. Klein、A. Medlik、A.Y. Meyer
DOI:10.1016/0040-4020(76)80020-8
日期:1976.1
Metalation of mesitylene with butyllithium in hexane in the presence of tetramethylethylenediamine yields mono-, di- and trilithiated benzylic compounds (1–5), characterized as their silylated derivatives. Dilithiation occurred partly at the same but preferentially at different methyls. The symmetrical tris-1,3,5-(lithiomethylene)benzene was the main product. Similar metalation occurred with m-xylene
在四甲基乙二胺存在下,用丁基锂在己烷中对亚甲基三甲苯进行金属化,可得到单,二和三硅烷基化的苄基化合物(1-5),其特征是它们的甲硅烷基化衍生物。双锂化部分发生在相同的位置,但优先出现在不同的甲基上。对称的三,1,3,5-(亚硫基亚甲基)苯是主要产物。类似的金属化发生与米二甲苯。邻二甲苯也产生二锂化产物,但速度较慢,对二甲苯则缓慢且仅产生宝石-二硫代衍生物。