Autoxidation of 4-Hydrazinylquinolin-2(1
H)-one; Synthesis of Pyridazino[4,3-
c:5,6-
c']diquinoline-6,7(5
H,8
H)-diones.
MOLECULES (BASEL, SWITZERLAND) 2022;
27:molecules27072125. [PMID:
35408525 PMCID:
PMC9000902 DOI:
10.3390/molecules27072125]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/16/2022] [Accepted: 03/21/2022] [Indexed: 11/16/2022]
Abstract
An efficient synthesis of a series of pyridazino[4,3-c:5,6-c']diquinolines was achieved via the autoxidation of 4-hydrazinylquinolin-2(1H)-ones. IR, NMR (1H and 13C), mass spectral data, and elemental analysis were used to fit and elucidate the structures of the newly synthesized compounds. X-ray structure analysis and theoretical calculations unequivocally proved the formation of the structure. The possible mechanism for the reaction is also discussed.
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