Synthesis of novel aryl and alkyl phosphine-imidazolium salts

Doctoral thesis English OPEN
Roberts, Huw John
  • Subject: QD

Several chelating phosphine-imidazolium salts have been synthesised and their activity tested in the hydrosilylation of styrene with triethylsilane and the Heck coupling of aryl bromides and chlorides with butyl acrylates. A number of synthetic routes have been established to synthesise aryl substituted phosphine-imidazolium salts. New synthetic routes have been established to synthesise borane-protected alkyl substituted phosphine-imidazolium salts. These methodologies have increased the scope to synthesise new alkyl substituted phosphine-imidazolium salts. Several group 9 and 10 complexes of these new aryl substituted phosphine-NHC ligands have been synthesised and characterised. The NHC's were generated in situ and reacted with suitable metal precursors. Platinum (0) complexes of these ligands were tested in the hydrosilylation of styrene with triethylsilane. Pd(0) complexes of these ligands were tested in the Heck coupling of aryl bromides and chlorides with butyl acrylate.
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