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Title of article :
Pt-based chiral organotin modified heterogeneous catalysts for the enantioselective hydrogenation of 3,4-hexanedione Original Research Article
Author/Authors :
Virginia Vetere، نويسنده , , Mar?a B. Faraoni، نويسنده , , Julio C. Podest?، نويسنده , , M?nica L. Casella، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
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Abstract :
In this paper we have studied the liquid-phase enantioselective hydrogenation of 3,4-hexanedione using Pt-based catalysts, modified with chiral organotin compounds derived from the (−)-menthyl group: (−)-Pt-MenSnBu3 and (−)-Men3Sn-Sn-(−)-Men3. The organotin chiral modifiers were carefully synthesized and characterized in order to obtain optically pure compounds. The catalysts were prepared through a controlled surface reaction between the supported transition metal and the organometallic compound, using techniques derived from Surface Organometallic Chemistry on Metals (SOMC/M). The organobimetallic catalytic systems were found to be active and enantioselective in the hydrogenation of 3,4-hexanedione, yielding an enantiomeric excess of 25–27% for 4-hydroxy-3-hexanone. Article Outline
Keywords :
Enantioselectivity , 3 , 4-Hexanedione , Hydrogenation , (?)-Menthyl derivatives , PtSn , SOMC/M
Journal title :
Applied Catalysis A:General
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