S-Aryldiazo xanthates, derived from the corresponding diazonium salts by reaction with potassium O-ethyl xanthate, undergo a radical chain reaction with loss of nitrogen; the intermediate aromatic radical can be captured by an internal olefin to give bicyclic xanthates in good overall yield.
Synthesis of functionalised indolines by radical-polar crossover reactions
作者:John A. Murphy、Faiza Rasheed、Stéphane Gastaldi、T. Ravishanker、Norman Lewis
DOI:10.1039/a607060d
日期:——
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