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Abstract In this paper, a simple and highly efficient Friedel–Crafts Michael–type addition of indoles to electron-deficient olefins was achieved by a new magnetic ionic liquid catalyst ([Dabco-C 8 ][FeCl 4… Click to show full abstract
Abstract In this paper, a simple and highly efficient Friedel–Crafts Michael–type addition of indoles to electron-deficient olefins was achieved by a new magnetic ionic liquid catalyst ([Dabco-C 8 ][FeCl 4 ]). This catalyst system is applicable to a variety of electron-deficient olefins, including chalcones, enones, and nitro-olefins, and affords the corresponding 3-alkylindole derivatives in good to excellent yields under mild conditions within short times. The catalyst can be recycled four times without considerable activity loss.
Journal Title: Catalysis Communications
Year Published: 2017
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