作者:Jonathan Clayden、Jérémy Dufour
DOI:10.1016/j.tetlet.2006.07.134
日期:2006.9
sec-butyllithium. Quenching with a range of electrophiles yields functionalised aryl ureas in excellent yield. Lateral lithiation is favoured when the urea nitrogen adjacent to the aromatic ring in question is alkylated, and when competitive lithiations of such a ring are possible, lateral lithiation is more favourable than the alternative ortholithiation.
带有N-(2-烷基芳基)基团的芳族脲可通过用仲丁基锂处理而横向锂化。用一系列亲电试剂猝灭可以以优异的产率产生官能化的芳基脲。当与所讨论的芳族环相邻的尿素氮被烷基化时,侧向锂化是有利的,并且当这种环的竞争性锂化是可能的时,侧向锂化比替代的原位锂化更有利。