enantiomeric excess (71%–83% ee). Ru-BINAP-catalyzed hydrogenation converted 2-trifluoromethyl-acrylic acid to the corresponding saturated acid, the ester-ification and reduction of which gave opticallyactive2-(trifluoromethyl)propan-1-ol in 80% ee.
The hydrogenation of (E)-2-(trifluoromethyl)alk-2-en-1-ols catalyzed by Ru-2, 2'-bis(diphynylphosphino)-1, 1'-binaphthyl (Ru-BINAP) and Rh-BINAP was carried out with good enantiomeric excess (71-83% ee). Ru-BINAP-catalyzed hydrogenation converted 2-(trifluoromethyl)acrylic acid to the corresponding saturated acid whose esterification and reduction provided optically active 2-(trifluoromethyl)propan-1-ol in 80% ee.
The trifluoromethylation of lithium enotates of chiral N-acyloxazolidinones with iodotriftuoromcthane mediated by triethylborone proceeds with good diastereomeric excess.