Design and synthesis of novel 1,10-phenanthroline derivatives

Haiming Jin, Liang Zou, Nanyu Chen, Yuanyuan Sun, Shuping Luo, Henrik Junge, Matthias Beller

Research output: Contribution to journalComment/debate

4 Scopus citations


To access functionalized nitrogen ligands, a series of novel 1,10-phenanthroline derivatives 1a~1d were designed and synthesized. Starting from 1-bromoaryl-3-chloroacetone (2) and o-phenylenediamine (3), 4,7-dibromoaryl-1,10-phenanthroline (4) were obtained in up to 64% yield by using a straightforward one-pot method catalyzed by mixed acids. Next, halogen lithium exchange reactions were performed to give 4. Finally, quenching of the reaction mixture with CO2 gave the desired 2,9-dialkyl-4,7-bis(carboxy-aryl)-1,10-phenanthroline derivatives 1 in up to 59% yield. This work provides a simple and convenient route to synthesize new 2,9-alkylated carboxylic acid-functionalized phenanthrolines.

Original languageEnglish
Pages (from-to)1792-1796
Number of pages5
JournalChinese Journal of Organic Chemistry
Issue number8
StatePublished - 1 Aug 2015
Externally publishedYes


  • 1,10-phenanthroline derivatives
  • Carboxylic acid
  • O-phenylenediamine
  • One pot


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