Transition-metal-free dehalogenation of aryl halides promoted by phenanthroline/potassium tert-butoxide

Transition-metal-free dehalogenation of various aryl halides (iodides and bromides) can take place efficiently at 70-110 degrees C in the presence of a catalytic amount of 1, 10-phenanthroline and t-BuOK using THF or Dioxane as solvent. Control experiments indicated that radical transfer occurred between aryl radical and alkyl C-H bond to generate alkyl radical. (C) 2017 Elsevier Ltd. All rights reserved.