Polycyclic N-heterocyclic compounds. Part 601): Reactions of 3-(2-cyanophenyl)quinazolin-4(3H)-ones with primary amines

Kensuke Okuda, Tsuyoshi Tagata, Setsuo Kashino, Takashi Hirota, Kenji Sasaki

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The reaction of 3-(2-cyanophenyl)quinazolin-4(3H)-one with various primary alkylamines gave 3-alkylquinazolin-4(3H)-ones via an addition of the nucleophile, ring opening, and ring closure (ANRORC) mechanism. This type of reaction required hydroxy group functionality in either the solvent or reagent. When hydroxylamine was used as nitrogen nucleophile, the intermediate of this reaction was isolated and found to be an amide oxime. When ethylenediamine was used as the nucleophile, the amidine moiety of the intermediate decomposed to give a benzanilide.

Original languageEnglish
Pages (from-to)1296-1299
Number of pages4
JournalChemical and Pharmaceutical Bulletin
Issue number11
Publication statusPublished - Nov 2009


  • 3-alkylquinazolin-4(3H)-one
  • Heterocycle
  • Nucleophile addition
  • Primary amine
  • Ring closure
  • Ring opening

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery


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