In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Hydrogenation of pyridine and α-picoline over Raney nickel-aluminum catalyst, published in 1959, which mentions a compound: 616-43-3, Name is 3-Methyl-1H-pyrrole, Molecular C5H7N, Quality Control of 3-Methyl-1H-pyrrole.
Hydrogenation of pyridine at 200° in a flow system over Raney Ni-Al catalyst gave piperidine, its azeotropic mixture with H2O (b739 90-2°, n20D 1.4320, d20 0.9277), and 2-methylpyridine. At low feed rate there was also formed some 3-methylpyrrole, 10% 2-propylpiperidine, and possibly some N-cyclopentylpiperidine. Hydrogenation of 2-picoline gave 2-pipecoline and some 3-methylpyrrole.
If you want to learn more about this compound(3-Methyl-1H-pyrrole)Quality Control of 3-Methyl-1H-pyrrole, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(616-43-3).
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