Unsymmetrical biaryls from dialkylacetylenes and aryl iodides in the presence of nickel halides and zinc metal
Abstract
Dialkylacetylenes RCCR (R = Et or Prn) react with aryl iodides in the presence of nickel halides, zinc powder and pyridine to give unsymmetrical biaryls 1 and 2 in moderate yields.