Supported palladium hydroxide-catalyzed intramolecular double CH bond functionalization for synthesis of carbazoles and dibenzofurans

Tamao Ishida, Ryosuke Tsunoda, Zhenzhong Zhang, Akiyuki Hamasaki, Tetsuo Honma, Hironori Ohashi, Takushi Yokoyama, Makoto Tokunaga

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Metal oxide-supported palladium hydroxide (Pd(OH)2/MOx) catalysts enabled the oxidative intramolecular couplings of diarylamines to carbazoles and diarylethers to dibenzofurans via double aryl CH bond functionalizations with molecular oxygen as the sole oxidant. While supported PdO, Pd, and palladium acetate catalysts showed poor catalytic activities, supported Pd(OH)2 exhibited remarkably high catalytic activity. Among supported Pd(OH)2 catalysts, Pd(OH)2/ZrO2 was found to be an efficient catalyst in terms of catalytic activities and selectivities for the synthesis of carbazoles and dibenzofurans.

Original languageEnglish
Pages (from-to)523-531
Number of pages9
JournalApplied Catalysis B: Environmental
Volume150-151
DOIs
Publication statusPublished - May 5 2014

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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