Catalytic asymmetric hydrogenation of N-Boc-imidazoles and oxazoles

Ryoichi Kuwano, Nao Kameyama, Ryuhei Ikeda

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88 Citations (Scopus)


Substituted imidazoles and oxazoles were respectively hydrogenated into the corresponding chiral imidazolines and oxazolines (up to 99% ee). The highly enantioselective hydrogenation was achieved by using the chiral ruthenium catalyst, which is generated from Ru(η3-methallyl) 2(cod) and a trans-chelating chiral bisphosphine ligand, PhTRAP. This is the first successful catalytic asymmetric reduction of 5-membered aromatic rings containing two or more heteroatoms.

Original languageEnglish
Pages (from-to)7312-7315
Number of pages4
JournalJournal of the American Chemical Society
Issue number19
Publication statusPublished - May 18 2011

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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