Nickel(0) induzierte und katalysierte CC-verknüpfungen von phenylisocyanat mit funktionalisierten alkenen
作者:Heinz Hoberg、Dieter Guhl
DOI:10.1016/0022-328x(89)85118-6
日期:1989.10
Monosubstituted alkenes RCHCH2 (R = OEt (Ia), SPh (Ib), CO2Me (Ic)) react with phenyl isocyanate on (Lig)Ni0 systems to form tricyclohexylphosphane-5-azanickelacyclopentan-4-one-derivatives (V). It is shown that the complexes V are intermediates in the catalytic CC coupling reaction. Further reactions by the system is dependent upon the nature of R. Thus when R = OEt (Ia) a β-elimination is induced