Tetrahedron Asymmetry p. 2649 - 2653 (1997)
Update date:2022-07-29
Topics:
Kreutz, Olyr C.
Moran, Paulo J. S.
Rodrigues, J. Augusto R.
The enantioselective Baker's yeast reduction of (E)-1-phenyl-1,2-propanedione 2-(O-methyloxime) 1 afforded (-)-(R)-1-hydroxy-1-phenyl-2-propanone 2-(O-methyloxime) 2 with 97% of enantiomeric excess (ee) which was diastereoselectively reduced by LiAlH4 to obtain the (-)-(R,S)-norephedrine with ee=82% and (-)-(R,R)-norpseudoephedrine with ee=93% in a ratio 4:1 respectively.
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(1997)
