TiO2-Supported Re as a General and Chemoselective Heterogeneous Catalyst for Hydrogenation of Carboxylic Acids to Alcohols

Takashi Toyao, S. M.A.Hakim Siddiki, Abeda S. Touchy, Wataru Onodera, Kenichi Kon, Yoshitsugu Morita, Takashi Kamachi, Kazunari Yoshizawa, Ken Ichi Shimizu

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28 Citations (Scopus)

Abstract

TiO2-supported Re, Re/TiO2, was found to promote selective hydrogenation of carboxylic acids having aromatic and aliphatic moieties to the corresponding alcohols. Re/TiO2showed superior results compared to other transition-metal-loaded TiO2and supported Re catalysts for selective hydrogenation of 3-phenylpropionic acid. 3-phenylpropanol was produced in 97 % yield under mild conditions (5 MPa H2at 140 °C). Contrary to typical heterogeneous catalysts, Re/TiO2does not lead to the formation of dearomatized byproducts. The catalyst is recyclable and shows a wide substrate scope in the synthesis of alcohols (22 examples; up to 97 % isolated yield).

Original languageEnglish
Pages (from-to)1001-1006
Number of pages6
JournalChemistry - A European Journal
Volume23
Issue number5
DOIs
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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