Reaction of β-Bromo-β,γ-unsaturated Pyrroline Nitroxide Aldehydes andNitriles with Aromatic N-Binucleophiles and S-Binucleophiles
2017
Reactions of β-bromo-β,γ-unsaturated pyrroline nitroxide aldehyde (1) or nitrile (4) or their diamagnetic
forms (5, 6) with 2-aminothiophenol or 2-mercaptobenzimidazole were evaluated. The reaction could be
reproduced more easily with the application of O-acetyl derivatives of nitroxides to generate 2-
substituted-benzothiazole, pyrrolo[3,4-b]benzo[1,5]tiazepine scaffolds with 2-aminothiophenol and
benzimidazo[2,1-b]pyrrolo[3,4-e]-[1,3]thiazine scaffold with 2-mercaptobenzimidazole.
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