Ni-catalyzed carboxylation of the C(sp(3))-Cl bond with CO2 in the presence of MgCl2 was theoretically investigated. MgCl2 plays three crucial roles in stabilization of a Ni(I)-CO2 adduct and acceleration of the CO2 insertion as a non-innocent additive and the one-electron reduction process as one kind of reagent.
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Sayyed et al. (2014) studied this question.
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