Tandem one-pot CO2 reduction by PMHS and silyloxycarbonylation of aryl/vinyl halides to access carboxylic acids

The synthesis of aryl/vinyl carboxylic acids from Csp²-bound halides (Cl, Br, I) in a carbonylative path by using silyl formate (from CO₂ and hydrosilane) as an instant CO-surrogate.