Preparation of 2-aryl-2H-benzotriazoles by zinc-mediated reductive cyclization of o-nitrophenylazophenols in aqueous media without the use of organic solvents

Guo Bin Liu, Hong Yun Zhao, Hong Jie Yang, Xiang Gao, Miao Kui Li, Thies Thiemann

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Zinc powder-mediated reductive cyclization of o-nitrophenylazophenols in alkaline solution affords the corresponding 2-aryl-2H-benzotriazoles in high yields under mild reaction conditions. No organic solvents are used in the reaction and only minimal amounts in the work-up.

Original languageEnglish
Pages (from-to)1637-1640
Number of pages4
JournalAdvanced Synthesis and Catalysis
Volume349
Issue number10
DOIs
Publication statusPublished - Jul 2007
Externally publishedYes

Keywords

  • 2-aryl-2H-benzotriazoles
  • O-nitrophenylazophenols
  • Reaction in water
  • Reductive cyclization
  • Zinc powder

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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