Regioselective Synthesis of 3-Alkylindoles Mediated by Zinc Triflate
摘要:
Zinc triflate was found to be an effective reagent for the C3-alkylation of indoles by alkyl halides in the presence of Hunig's base and tetrabutylammonium iodide. This new method for indole alkylation proceeds by a S(N)1-like pathway, and is general for allylic, benzylic, and tertiary halides.