Dong, Xing published the artcileEnantioselective hydrogenation of tiglic acid in methanol and in dense carbon dioxide catalyzed by a ruthenium-BINAP complex substituted with OCF3 groups, Formula: C22H12F6O6S2, the publication is Journal of Molecular Catalysis A: Chemical (2004), 211(1-2), 73-81, database is CAplus.
A fluorinated analog of the 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (BINAP) ligand was synthesized with OCF3-substitution of the aryl groups in BINAP skeleton (p-OCF3-BINAP). Ruthenium complexes of both BINAP (Ru-BINAP) and (p-OCF3)-BINAP (Ru-[(p-OCF3)-BINAP]) were also synthesized and investigated as catalysts for hydrogenation of tiglic acid in methanol. Typically, Ru-[(p-OCF3)-BINAP] had lower activity but had higher enantioselectivity at high hydrogen pressures than Ru-BINAP at the same condition. The effect of OCF3 groups on the catalytic properties was discussed on the basis of NMR spectra and kinetic data. Ru-[(p-OCF3)-BINAP] was found to have sufficiently high solubility in dense CO2 for homogeneous catalytic reactions and was investigated for hydrogenation of tiglic acid in CO2. The results showed that CO2 had a great influence on both activity and enantioselectivity. Addition of methanol to CO2 was found to increase the enantioselectivity.
Journal of Molecular Catalysis A: Chemical published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Formula: C22H12F6O6S2.
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