The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 3-Methyl-1H-pyrrole( cas:616-43-3 ) is researched.Name: 3-Methyl-1H-pyrrole.Yuzhakova, O. A.; Kurkovskaya, L. N.; Shapet’ko, N. N.; Potapov, V. K.; Shatenshtein, A. I. published the article 《Delayed exchange of hydrogen in imine groups of pyrrole and indole》 about this compound( cas:616-43-3 ) in Teoreticheskaya i Eksperimental’naya Khimiya. Keywords: imine ethanol hydrogen exchange; pyrrole ethanol hydrogen exchange; indole ethanol hydrogen exchange; ionization potential indole pyrrole. Let’s learn more about this compound (cas:616-43-3).
The rate of H-D exchange between EtOD and pyrrole (I) or indole (II) in CCl4 was measured by NMR, and the rate constants were calculated from the 1st-order rate equation. The H exchange in NH groups of unsubstituted 5 membered heterocycles in the absence of an electron-donating solvent was slow. The photoionization potentials, Ip, of I, N-methylpyrrole (III), α-methylpyrrole (IV), and β-methylpyrrole were measured. The highest and the smallest Ip change was observed on passing from I to IV, and from I to III, resp. The probable structures of I complexes and I complexes with the alc. were suggested together with the causes of slow H exchange.
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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