Organophotoredox/palladium dual catalytic decarboxylative Csp-Csp coupling of carboxylic acids and π-electrophiles.

A dual catalytic decarboxylative allylation and benzylation method for the construction of new C(sp)-C(sp) bonds between readily available carboxylic acids and functionally diverse carbonate electrophiles has been developed. The new process is mild, operationally simple, and has greatly improved upon the efficiency and generality of previous methodology. In addition, new insights into the reaction mechanism have been realized and provide further understanding of the harnessed reactivity.