Metal-free late-stage C(sp<sup>2</sup>)–H functionalization of<i>N</i>-aryl amines with various sodium salts
作者:Chandrashekar Mudithanapelli、Mi-hyun Kim
DOI:10.1039/c9ob02217a
日期:——
Metal-free consecutive C(sp2)–X (X = Cl, Br, S, N) bond formations of N-aryl amines (cyclic, fused, carbamate, and aminium radicals) were achieved under mild conditions using [bis(trifluoroacetoxy)iodo]benzene (PIFA) and simple nonharmful sodium salts. This direct and selective C(sp2)–H functionalization showed excellent functional group compatibility, cost effectiveness, and late-stage applicability
不含金属的连续的C(SP 2)-X(X =氯,溴,S,N)的键形成ñ -芳基胺(环状,稠合,氨基甲酸酯,和铵基团)使用[双温和的条件下实现(三氟乙酰氧基)碘]苯(PIFA)和简单的无害钠盐。这种直接和选择性的C(sp 2)–H官能化显示出优异的官能团相容性,成本效益和生物活性天然产物合成的后期适用性。提出了两种机制来解释邻位或对位偏爱以及CH 3 NO 2的加速作用。