Racemization of Optically Active AromaticN-Acetylamino Acids and Asymmetric Transformation ofN-Acetyl-2-(4-hydroxyphenyl)glycine via Salt Formation with Optically Active α-Methylbenzylamine
-Benzyl derivatives of (S)-(+) and (R)-(−)-2-aminobutan-1-ol as new resolving agents for racemic acids. Practical resolutions of -acyl derivatives of phenylglycine and 4-hydroxyphenylglycine
作者:Joël Touet、Laurent Faveriel、Eric Brown
DOI:10.1016/s0040-4039(00)60491-4
日期:1993.4
Treatment of the readily available (S)-(+) and (R)-(-)-2-aminobutan-1-ol 1 with sodium hydride followed by benzyl chloride, or a substituted benzyl halide, afforded the corresponding -benzyl bases 2-5 in high yields. These new bases are recommended for the large scale resolution of racemic acids. For instance, they proved efficient for the practical resolution of -acetylphenylglycine (±)-7, -acety