A Facile Access to Spirooxindoles by Halogen-mediated Electrochemical Semi-pinacol Rearrangement

The semi-pinacol rearrangement of tetrahydro-P-carbolines afforded 3-spirooxindoles. The anodically generated bromonium ion equivalent as a halogen mediator efficiently promoted the transformation.

Automated summary

The semi-pinacol rearrangement of tetrahydro-P-carbolines to afford 3-spirooxindoles was efficiently promoted by anodically generated bromonium ion equivalent as a halogen mediator.