O. Pingkai
2007
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Journal
Modern Chemical Industry
Abstract
The catalytic green route for producing L-Alaninol was obtained by the catalytic hydrogention from L-alanine as the starting materials using 5% of Ru-Rh/Al2O3 double-nuclear metal catalyst.The optimum of L-alaninol preparation catalyzed by the hydrogenation was 1.1 of the mol ratio between H3PO4/L-Ala,110℃ of the temperature,7 hours of the reaction time,4 MPa of the H2 pressure.The converting yield of L-alanine was 96% and the enantioselectivity excess of L-alaninol was up to 99%.This method was also suitable to the other amino acids such as L-phenylanine/L-valine,etc.,with a yield of 97% e.e.