A plausible mechanism of calcium(II) chloride catalyzed Paal-Knorr condensation under MW irradiation.

 
 
  Part of: Mateev E, Irfan A, Mateeva A, Georgieva M, Zlatkov A (2024) Microwave-assisted organic synthesis of pyrroles (Review). Pharmacia 71: 1-10. https://doi.org/10.3897/pharmacia.71.e119866