Enantioselective synthesis of a conformationally rigid, sterically encumbered, 2-arsino-7-phosphanorbornene.
Convenient access to the enantionerically pure, conformationally rigid, ligand has been established by intramolecular [4 + 2]-Diels-Alder cycloaddition between dicyclohexylvinylarsine and 3,4-dimethyl-1-phenylphosphole using chiral organopalladium(II) complexes containing orthometallated (S)-1-α-(dimethylamino)ethylnaphthalene or (R)-2-α-(dimethylamino)ethylnaphthalene as the reaction templates. The ligand was displaced from the palladium complex with cyanide and reacted with [η6-arene)RuCl2]2...[Show more]
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|Source:||Journal of Organometallic Chemistry|
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