Anilido-pyrazole ligand supported germylenes: synthesis, structure, and catalytic N-formylation of amines using CO2

Abstract

We report herein the synthesis of new germylenes supported by an anilido-pyrazole ligand and their catalytic efficacy in the selective N-formylation of amines using CO₂ (atmospheric pressure) and hydrosilanes. The reaction mechanism was proposed based on various control experiments and DFT calculations, which suggested the important roles of the hemilabile pyrazole and amido ligands in the present protocol. Our work expands the scope of germylene-based catalysis by offering new insights into CO₂ valorisation.