Solid Acid-Catalysed Michael-Type Conjugate Addition of Indoles to Electron-Poor CC Bonds: Towards High Atom Economical Semicontinuous Processes
作者:Marco Bandini、Matteo Fagioli、Achille Umani-Ronchi
DOI:10.1002/adsc.200303213
日期:2004.4
the chemoselective Friedel–Crafts (FC) alkylation of indoles is reported. The optimal protocol allows highly functionalised indolyl compounds to be synthesised in excellent yields through conjugate addition of indoles with α,β-unsaturated ketones and nitro compounds. Finally, the use of commercial Amberlyst-15 as the heterogeneous catalyst for highly atom efficient continuous and semicontinuous Friedel–Crafts
本文报道了固体酸催化剂在吲哚的化学选择性弗里德-克拉夫茨(FC)烷基化中的新应用。最佳方案是通过将吲哚与α,β-不饱和酮和硝基化合物共轭加成,以高收率合成高度官能化的吲哚基化合物。最后,描述了使用商业Amberlyst-15作为高度原子有效的连续和半连续Friedel-Crafts工艺的非均相催化剂。