Indium-mediated dehalogenation of haloheteroaromatics in water
摘要:
It turned out that indium metal was applicable to the dehalogenation of aromatic halides in water. This method is facile and safe compared with the conventional methods such as Pd-C, Raney Ni, or halogen-metal exchange. (c) 2007 Elsevier Ltd. All rights reserved.
The reaction of pi-deficient haloheterocycles with indium metal in water gave corresponding dehalogenated heterocycles. The use of diluted hydrochloric acid instead of water accelerated the reductive reactivity of indium metal. Furthermore, Barbier-type additions proceeded by reactions of alpha-iodoheterocycles with indium in the presence of pivalaldehyde.