The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Molecular orbital treatment of a new type of heteroaromatic compound》. Authors are Brown, R. D.; Coller, B. A. W..The article about the compound:3-Methyl-1H-pyrrolecas:616-43-3,SMILESS:CC1=CNC=C1).Category: chiral-oxygen-ligands. Through the article, more information about this compound (cas:616-43-3) is conveyed.
I, II, III, and IV are treated; of these only II is known (Boeckelheide and Windgassen, C.A. 52, 16355i). The present results indicate that all 4 compounds would be stable once formed. Resonance energies, π-electron d., and energies of excited states are given as a function of the electronegativity of N. Definite predictions of the position of highest reactivity toward electrophiles can be made for I and II; it is position 1 in either case.
Here is just a brief introduction to this compound(616-43-3)Category: chiral-oxygen-ligands, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.
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