Abstract
2-(N-Arylaminoethyl)benzimidazoles have been obtained by various methods. The best method is shown to be by reaction of N-aryl-β- alanine imidate ester hydrocnlorides with o-phenylenediamine. It has been found that, in presence of polyphosphoric acid (PPA), N-aryl-β- alanines and their esters give 1, 2, 3, 4-tetrahydro-4-oxoquinolines.
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For part I, see [8].
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Solomko, Z.F., Polinovskii, G.A. N-aryl-β-amino acids. Chem Heterocycl Compd 5, 649–651 (1969). https://doi.org/10.1007/BF00957381
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DOI: https://doi.org/10.1007/BF00957381