The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Thermal reactions of organic nitrogen compounds. III. 1-Isopropylpyrrole》. Authors are Jacobson, I. A. Jr.; Jensen, H. B..The article about the compound:3-Methyl-1H-pyrrolecas:616-43-3,SMILESS:CC1=CNC=C1).Reference of 3-Methyl-1H-pyrrole. Through the article, more information about this compound (cas:616-43-3) is conveyed.
cf. CA 57, 9781i. 1-Isopropylpyrrole isomerized irreversibly to 2-isopropylpyrrole, which in turn isomerized reversibly to 3-isopropylpyrrole. The temperature range was 340-575°. The entropies and heats of activation were calculated for the isomerization reactions 1-alkylpyrrole → 2-alkylpyrrole ⇄ 3-alkylpyrrole at 500° for methyl-, butyl-, and isopropylpyrrole.
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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