Sammanfattning
The asymmetric hydrogenation of geraniol (3,7-dimethylocta-2,6-dien-1-ol) to citronellol was performed using ruthenium BINAP catalysts at 60 degrees C. The influence of solvent (methanol, ethanol, 1-propanol, and 2-propanol), catalyst type (Ru(OAc)(2)(BINAP), R-Ru(OAc)(2)(T-BINAP), and R-RuCl[(p-cymene)(BINAP)]Cl), and hydrogen pressure (5-40 bar) was studied. The reaction rate decreased in the order methanol > ethanol > 1-propanol > 2-propanol, but the selectivity and enantiomeric excess were independent of solvent. R-Ru(OAc)(2)(T-BINAP) afforded the highest enantiomeric excess of S-citronellol. The reaction rate and enantioselectivity increased with hydrogen pressure. A kinetic model was developed based on the proposed reaction mechanism with subsequent parameter estimation.
Originalspråk | Odefinierat/okänt |
---|---|
Sidor (från-till) | 1901–1907 |
Antal sidor | 7 |
Tidskrift | Catalysis Science and Technology |
Volym | 2 |
Nummer | 9 |
DOI | |
Status | Publicerad - 2012 |
MoE-publikationstyp | A1 Tidskriftsartikel-refererad |