Reductive Amination of Ketones with Benzylamine Over Gold Supported on Different Oxides

Kolobova E.; Mäki-Arvela P.; Pestryakov A.; Pakrieva E.; Pascual L.; Smeds A.; Rahkila J.; Sandberg T.; Peltonen J.; Murzin D.Y.
Reductive Amination of Ketones with Benzylamine Over Gold Supported on Different Oxides

Kolobova E.
Mäki-Arvela P.
Pestryakov A.
Pakrieva E.
Pascual L.
Smeds A.
Rahkila J.
Sandberg T.
Peltonen J.
Murzin D.Y.
Katso/Avaa
Lataukset: 

Springer New York LLC
doi:10.1007/s10562-019-02917-1
URI
https://link.springer.com/article/10.1007/s10562-019-02917-1
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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042823131
Tiivistelmä

Reductive amination of cyclohexanone with benzylamine was investigated at 100 °C under 30 bar hydrogen in toluene with five different gold catalysts prepared by deposition–precipitation method and supported on TiO2, La2O3/TiO2, CeO2/TiO2, La2O3 and CeO2. Size of metallic gold varied in the range of 2.6–3.6 nm. The best catalysts in reductive amination of cyclohexanone with benzylamine were 4 wt% Au/TiO2 and 4 wt% Au/CeO2/TiO2 giving 72% and 79% yield of the desired amine. The most acidic and basic catalysts were also unselective and exhibited low activity towards imine hydrogenation. The best catalyst 4 wt% Au/CeO2/TiO2 gave in reductive amination of propiophenone 56% selectivity to the corresponding amine at 20% conversion in 5 h.

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