Oxidative Addition of Aryl Electrophiles to a Prototypical Nickel(0) Complex: Mechanism and Structure/Reactivity Relationships
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https://figshare.com/articles/dataset/Oxidative_Addition_of_Aryl_Electrophiles_to_a_Prototypical_Nickel_0_Complex_Mechanism_and_Structure_Reactivity_Relationships/4824829
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资源简介：
Detailed
kinetic studies of the reaction of a model Ni0 complex
with a range of aryl electrophiles have been conducted.
The reactions proceed via a fast ligand exchange pre-equilibrium,
followed by oxidative addition
to produce either [NiIX(dppf)] (and biaryl) or [NiII(Ar)X(dppf)]; the ortho substituent of the
aryl halide determines selectivity between these possibilities. A
reactivity scale is presented in which a range of substrates is quantitatively
ranked in order of the rate at which they undergo oxidative addition.
The rate of oxidative addition is loosely correlated to conversion
in prototypical cross-coupling reactions. Substrates that lead to
NiI products in kinetic experiments produce more homocoupling
products under catalytic conditions.
创建时间：
2017-04-06
