Symmetric trichloro triazine adducts with N, N’-dimethyl formamide and N, N’-dimethyl acetamide as green Vilsmeier –Haack reagents for effective formylation and acylation of Indoles

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Abstract Symmetric trichloro triazine (trichlorotriazine (TCTA), and trichloroisocyanuric acid (TCCA)) adducts with N, N’-dimethyl formamide (DMF) N, N’-dimethyl acetamide (DMA) were explored as green Vilsmeier –Haack (VH) reagents for effective formylation and acetylation of indole. Reaction times (RT) reduced significantly in (TCTA/DMF), (TCCA/DMF), (TCTA/DMA) and (TCCA/DMA) triggered reactions followed by yield increments. Microwave assisted (MWA) protocols with these reagents reduced the reaction times from several hours to only few minutes followed by yield enhancements.