Ceric ammonium nitrate (CAN) as a green and highly efficient promoter for the 1,4-addition of thiols and benzeneselenol to α,β-unsaturated ketones

Cheng Ming Chu, Shijay Gao, M. N.V. Sastry, Chun Wei Kuo, Chaowei Lu, Ju Tsung Liu, Ching-Fa Yao

Research output: Contribution to journalArticle

45 Citations (Scopus)


A mild and efficient process for the 1,4-addition of thiols and benzeneselenols to various α,β-unsaturated ketones using a catalytic amount of CAN with excellent product yields is described. This inexpensive, nontoxic, and readily available catalytic ceric(IV) ammonium nitrate system efficiently catalyzes conjugate addition reactions between thiol derivatives and various α,β-unsaturated ketones under solvent-free conditions. A plausible mechanism for the role of CAN, both as a promoter in free radical chain addition reactions as well as a catalyst for the conjugate addition process is proposed.

Original languageEnglish
Pages (from-to)1863-1871
Number of pages9
Issue number8
Publication statusPublished - 2007 Feb 19



  • 1,4-Addition
  • Ceric ammonium nitrate (CAN)
  • Solvent free
  • Thiol and benzeneselenol
  • α,β-Unsaturated ketones

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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