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A mild and highly efficient method has been developed for the synthesis of unsymmetrical 2,2-di(1H-indol-3-yl)-N-phenylacetamide derivatives by the regioselective Friedel–Crafts alkylation of 2-hydroxy-2-(1H-indol-3-yl)-N-phenylacetamide derivatives with various indoles catalyzed by AlCl3 at room temperature in a short reaction time in high yields (up to 96%). All these compounds were screened for...
A facile strategy for the synthesis of isatins in high yield from N-alkyl-2-oxo-acetanilides has been developed via Friedel–Crafts alkylation using FeCl3 as catalyst under air. This reaction proceeds through direct intramolecular addition and oxidation in one pot. Also this methodology is operationally simple, atom economical, and environment friendly.
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