fig1
![Regioselectivity of <i>N</i>-heteroarene electrocarboxylations: divided <i>vs.</i> undivided cell](https://image.oaes.cc/1b7fdce4-6cc2-447e-961a-8dc703ec58d5/5536.fig.1.jpg)
Figure 1. Strategies for pyridine C-H functionalization. (A) Common strategies on different sites with alkylation, arylation, borylation and halogenation. (B) Precedents for C-H carboxylation of pyridine and related N-heteroarenes with CO2. (C) New concept of regiodivergent electrochemical C-H carboxylation of pyridines.