Journal of Organometallic Chemistry p. 429 - 436 (1987)
Update date:2022-08-02
Topics:
Hernandez, Elisa
Hoberg, Heinz
The CC coupling of 1,3-butadiene with phenylisocyanate at nickel(0) systems is ligand-dependent.Basic phosphanes such as triethyl- or tricyclohexylphosphane induce a stoichiometric 1/1 CC-coupling reaction yielding azanickela complexes.Triphenylphosphane, on the other hand, leads to a catalytic reaction.Catalysis is initiated by 2/1 coupling, which, after intramolecular cyclisation finally yields carbocyclic five-ring amides.Some special features are listed and the reaction mechanisms are discussed.
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(1988)