ASYMMETRIC HYDROGENATIONS OF<i>N</i>-PYRUVOYL-(<i>S</i>)-AMINO ACID ESTERS BY USING SODIUM BOROHYDRIDE. A SOLVENT EFFECT
作者:Toratane Munegumi、Kaoru Harada
DOI:10.1246/cl.1983.1225
日期:1983.8.5
N-Pyruvoyl-(S)-amino acid isobutyl esters were hydrogenated with sodium borohydride(NBH) in several alcoholic solvents, and N-[(R)-lactoyl]-(S)-amino acid esters were obtained with diastereoisomeric purity of up to 44%. Significant solvent effect on the diastereoisomeric purity of the product was observed.
N-丙酮酰-(S)-氨基酸异丁酯在几种醇类溶剂中用硼氢化钠(NBH)加氢,得到N-[(R)-乳酰基]-(S)-氨基酸酯,非对映异构体纯度高达到 44%。观察到溶剂对产物的非对映异构体纯度的显着影响。