Journal Article Hydrogenation of Carbon Dioxide to Formate Catalyzed by a Copper/1,8-Diazabicyclo[5.4.0]undec-7-ene System

亘理, 龍  ,  Watari, Ryo  ,  榧木, 啓人  ,  Kayaki, Yoshihito  ,  平野, 伸一  ,  Hirano, Shin-ichi  ,  松本, 伯夫  ,  Matsumoto, Norio  ,  碇屋, 隆雄  ,  IKARIYA, TAKAO

357 ( No. 7 )  , pp.1369 - 1373 , 2015-04
Hydrogenation of carbon dioxide to formate was achieved using copper (Cu) catalysts in the presence of strong organic bases including amidines and guanidines. Specifically, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) proved to be effective for the transformation of a 1:1 mixture of hydrogen and carbon dioxide into its formate salt under increased pressure in the presence of various Cu(I) and Cu(II) salts at 100 °C. A novel complex derived from copper iodide and DBU equally promoted the same reaction, indicating that DBU-Cu species are involved as real catalysts in the hydrogenation.

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