Figure 6. Plot of pKa versus Taft σ*ortho for 5-substituted-2-pyrrole carboxylic acids

From

A Deep Insight into the Application of Linear Free Energy Relationships (LFER) to Five Membered Heterocyclic Ring Systems: A Chemical Education Review for Graduate Students

Sanjeev Rachuru, V. Jagannadham

World Journal of Chemical Education. 2025, 13(3), 65-90 doi:10.12691/wjce-13-3-5