TiO 2 ‐Supported Re as a General and Chemoselective Heterogeneous Catalyst for Hydrogenation of Carboxylic Acids to Alcohols | Zendy

Toyao Takashi | Zendy; Siddiki S. M. A. Hakim | Zendy; Touchy Abeda S. | Zendy; Onodera Wataru | Zendy; Kon Kenichi | Zendy; Morita Yoshitsugu | Zendy; Kamachi Takashi | Zendy; Yoshizawa Kazunari | Zendy; Shimizu Kenichi | Zendy

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TiO 2 ‐Supported Re as a General and Chemoselective Heterogeneous Catalyst for Hydrogenation of Carboxylic Acids to Alcohols

Author(s) -

Toyao Takashi,

Siddiki S. M. A. Hakim,

Touchy Abeda S.,

Onodera Wataru,

Kon Kenichi,

Morita Yoshitsugu,

Kamachi Takashi,

Yoshizawa Kazunari,

Shimizu Kenichi

Publication year - 2017

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201604762

Subject(s) - catalysis , yield (engineering) , chemistry , substrate (aquarium) , organic chemistry , transition metal , heterogeneous catalysis , carboxylic acid , materials science , oceanography , metallurgy , geology

TiO 2 ‐supported Re, Re/TiO 2 , was found to promote selective hydrogenation of carboxylic acids having aromatic and aliphatic moieties to the corresponding alcohols. Re/TiO 2 showed superior results compared to other transition‐metal‐loaded TiO 2 and supported Re catalysts for selective hydrogenation of 3‐phenylpropionic acid. 3‐phenylpropanol was produced in 97 % yield under mild conditions (5 MPa H 2 at 140 °C). Contrary to typical heterogeneous catalysts, Re/TiO 2 does 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).

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