formation of a carbon‐carbon bond at the air/water interface of negatively charged aqueous
microdroplets, at ambient temperature. The reactions proceed through carbanion generation
at the α‐carbon of a ketone followed by nucleophilic addition to CO2. Online mass
spectrometry reveals that the product is an α‐ketoacid. Several factors, such as the
concentration of the reagents, pressure of CO2 gas, and distance traveled by the droplets …