An efficient procedure for the direct arylation of pyrrolidine with phenols and naphtols is
reported. Upon reaction with catalytic amounts of a binuclear copper(II)-7-azaindole complex under an
atmosphere of oxygen, pyrrolidine is smoothly oxidized to the corresponding imine which can be
trapped in situ by a series of phenols and naphtols in fair to good yields. This copper-catalyzed direct
oxidative arylation of pyrrolidine offers an efficient entry to α-aryl-pyrrolidines in a single step and
without the need for protecting or directing groups.
报道了一种高效的
吡咯烷与
酚和
萘酚直接芳基化的方法。在
氧气氛下,
吡咯烷与催化量的双核
铜(II)-
7-氮杂吲哚配合物反应,顺利氧化为相应的
亚胺,可被一系列
酚和
萘酚以较好至优良的产率原位捕获。这种
铜催化的
吡咯烷直接氧化偶联法为α-芳基
吡咯烷提供了一条高效的单步合成途径,且无需保护基团或导向基团。