fig2
Figure 2. Possible mechanism diagram of the CO2-participated C-H carboxylation of N-heteroarenes. (A) Reaction pathways determined by different mechanisms: C5-carboxylation via electro-reductive activation and C4-carboxylation via paired-electrolysis-enabled HAT. (B) Achievement of C4-carboxylation and regeneration of hydrogen acceptors in the undivided cell.
