A copper(II) neocuproine system has been developed for the efficient and very selective 1,6-addition of a nucleophile to the para-methyl group of 2,4,6-trimethylphenol. Crystallographic and spectroscopic data point towards the involvement of a μ-methoxo–μ-phenoxo-bridged copper species which appears to generate a highly reactive quinone methide intermediate that can be attacked by a nucleophilic reagent.
我们开发了一种新
铜(II)系统,用于将亲核体与 2,4,6-三甲基
苯酚的对甲基进行高效且极具选择性的 1,6 加成。晶体学和光谱学数据表明,μ-甲氧基-μ-苯氧基桥接
铜物种参与其中,似乎产生了一种可被亲核试剂攻击的高活性醌甲酰胺中间体。