Product Application

NiCl2 and its hydrate are occasionally useful in organic synthesis

As a mild Lewis acid, e.g. for the regioselective isomerization of dienols :

  • In combination with CrCl2 for the coupling of an aldehyde and a vinylic iodide to give allylic alcohols.
  • For selective reductions in the presence of LiAlH4, e.g. for the conversion of alkenes to alkanes.
  • As a precursor to Brown's P-1 and P-2 nickel boride catalyst through reaction with NaBH4.
  • As a precursor to finely divided Ni by reduction with Zn, for the reduction of aldehydes, alkenes, and nitro aromatic compounds. This reagent also promotes homo-coupling reactions, that is 2RX → R-R where R = aryl, vinyl.
  • As a catalyst for making dialkyl arylphosphonates from phosphites and aryl iodide.

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