At −90°C in THF or similar media bis(trimethylsilyl)dichloromethane 2 reacts with lithium-4,4′-di-tert-butylbiphenyl (LiDBB) or suspensions of freshly sublimed lithium to give the title compound 1 that can bind two equivalents of various electrophiles. 1 has a great propensity for proton abstraction and it is markedly less reactive towards ethyl iodide than (Me3Si)2EtCLi6.
在-90°C下,在THF或类似介质中,双(三甲基甲
硅烷基)
二氯甲烷2与4,4'-二叔丁基
联苯锂(Li
DBB)或新鲜升华的
锂悬浮液反应,生成标题化合物1,该化合物可以结合两个当量各种亲电试剂。1具有很强的质子提取倾向,并且与(Me 3 Si)2 EtCLi 6相比,它对乙基
碘的反应性明显更低。