HFIP-promoted Michael reactions: direct <i>para</i>-selective C–H activation of anilines with maleimides
作者:Bang Li、Qi Mao、Jia Zhou、Feng Liu、Na Ye
DOI:10.1039/c8ob03073a
日期:——
The Michael reaction is widely used for the C–C coupling of electron-poor olefins and C(sp3)–H pronucleophiles. Herein, an effective Michael reaction approach between electron-rich aromatic and heteroaromatic substrates as C(sp2)–H nucleophiles with maleimides as electrophiles in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) was first presented without the need for any additional metal catalysts or reagents
迈克尔反应被广泛用于贫电子烯烃与C(sp 3)–H前亲核试剂的C–C偶联。在此,在1,1,1,3,3,3-六氟-2-丙醇(HFIP)中,富电子芳族底物和杂芳族底物作为C(sp 2)–H亲核试剂与马来酰亚胺作为亲电试剂之间的有效迈克尔反应方法是首先提出,不需要任何其他金属催化剂或试剂。该反应为由N,N-二取代的苯胺和马来酰亚胺以高对位选择性容易地构建3-芳基琥珀酰亚胺提供了简洁且环境友好的策略。