Catalytic Dehalogenation of Organic Halides in 2-Propanol with Pd/C Catalyst

Abstract

Catalytic dehalogenation of organic halides was carried out in a 2-propanol solution of NaOH with Pd/C at temperatures below 82 °C. It was found that the aliphatic halides were converted to the corresponding halogen-free hydrocarbons with high yields, although the reaction rate was much slower than that of aromatic halides. Among the substrates containing I, Br and Cl, the order of dehalogenation rate was I>Br>Cl. The halogen at the terminal position of the carbon chain was easily dehalogenated rather than the internal halogen.