Synthesis of functionalised indolines by radical-polar crossover reactions

Abstract

Functionalised indolines have been prepared by treating tetrathiafulvalene (TTF) with 2-(N-acyl-N -allylamino)benzenediazonium tetrafluoroborates. N-Benzoyl-protected substrates afford complex reaction mixtures due to competing radical cyclisation onto the benzoyl group. Acetamides react more efficiently affording good yields of product alcohols when the reactions are carried out in moist acetone