tryptamine derivativesemploying a combination of alkynes and sulfonyl azides as readily accessible aminoethylating agents. The reaction features a successful integration of copper‐catalyzed alkyne and azide cycloaddition to N‐sulfonyl‐1,2,3‐triazole, rhodium‐catalyzed selective insertion of α‐iminocarbenes onto the C3H bond of indoles, and reduction of the resultant enamides to tryptamine derivatives employing
process for the efficient syntheses of both tetrahydro-β-carbolines and tetrahydroisoquinolines from readily available benzylic alcohols and aziridines was developed, which would be a highly valuable complement to the widely used Pictet–Spenglerreaction. A probable mechanism was proposed based on the isolation and characterization of two key intermediates. This strategy enables facile access to important