The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Shifts in wave number of electronic transitions due to substitution-for furan, pyrrole, and thiophene》. Authors are Santhamma, V..The article about the compound:3-Methyl-1H-pyrrolecas:616-43-3,SMILESS:CC1=CNC=C1).Recommanded Product: 616-43-3. Through the article, more information about this compound (cas:616-43-3) is conveyed.
The transitions, Φ3 → Φ4 and Φ3 → Φ5, were calculated for Me and F substitution on furan, pyrrole, and thiophene. The method used to calculate the shifts is outlined. An effective comparison of the calculated shifts with observed values is not possible due to paucity of exptl. data.
Although many compounds look similar to this compound(616-43-3)Recommanded Product: 616-43-3, numerous studies have shown that this compound(SMILES:CC1=CNC=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate