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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/128/11/1813-1821

    • Keywords

       

      Indolizine; 1,8-naphthyridine; density functional theory; crystal structure; spectroscopic properties.

    • Abstract

       

      Novel pyrrolo[1',5'-a]-1,8-naphthyridine compounds (L1-L4) have been synthesized through a facile one-pot process by the reaction of the corresponding 1,8-naphthyridines with aliphatic anhydride. The structures were established by spectroscopic data. Further, X-ray crystal analysis of 7-diacetamino-2,4-dimethy-1,8-naphthyridine (L1) identifies its molecular structure and reveals π-π stacking. The synthetic mechanisms for L2, L3 were studied by density functional theory calculations. And a comprehensive study of spectroscopic properties involving experimental data and theoretical studies is presented. L1 exhibited electronic absorption spectrum with λmax at ∼320 nm. L2-L4 exhibited similar electronic absorption spectra with λmax at ∼390 nm that is tentatively assigned to π→π* transition. The assignment was further supported by density functional theory (DFT) calculations.

    • Author Affiliations

       

      GAO-ZHANG GOU1 BO ZHOU1 HE-PING YAN1 YONG HONG1 WEI LIU1 SHAO-MING CHI2 CHAO-YONG MANG3

      1. School of Science, Honghe University, Mengzi, Yunnan 661199, P. R. China
      2. College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, P. R. China
      3. College of Pharmaceutical Science and Chemistry, Dali University, Dali, Yunnan 671000, P. R. China

    • Dates

       
      Published
      2 November 2016
      Manuscript received
      15 June 2016
      Manuscript revised
      30 July 2016
      Accepted
      8 August 2016

    • Supplementary Material

       

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