J. Touet et al., RESOLVING AGENTS .1. (R)-(-)-2-AMINO-1-BENZYLOXYBUTANE, A NEW BASE FOR THE RESOLUTION OF RACEMIC ACIDS, Synthetic communications, 24(3), 1994, pp. 293-300
Treatment of the readily available (R)-(-) enantiomer of 2-aminobutan-
1-ol 1 with sodium hydride followed by benzyl chloride afforded the ($
) under bar O-benzyl base (R)-(-)-2. The latter was successfully used
for the resolution of racemic alpha-methylsuccinic and alpha-bromosucc
inic acids, as well as of the racemic alpha-benzylhemisuccinic esters
8 and 9 respectively.