Entrapment of a chiral cobalt complex within silver: A novel heterogeneous catalyst for asymmetric carboxylation of benzyl bromides with CO₂

A novel way to accommodate heterogeneous catalysis, CO₂ fixation and asymmetric synthesis on one catalyst is reported. The [Co]@Ag composite was prepared for the first time and used for asymmetric carboxylation of benzyl bromides with CO₂. All the procedures were performed under mild conditions. Moreover, the [Co]@Ag composite has terrific stability and reusability.