Simple synthesis of optically active 2-fluoropropanoic acid and analogs of high enantiomeric purity
作者:Elke Fritz-Langhals、Gabi Schu¨tz
DOI:10.1016/s0040-4039(00)60570-1
日期:1993.1
A very simple synthesis of optically active 2-fluoropropanoic acid 1 (R=CH3, R′=H) and analogs of high enantiomeric purity was developed using the sulfonates 2 of the corresponding optically active 2-hydroxycar☐ylic esters and potassium fluoride in formamide. Thus methyl (R)-2-fluoropropanoate (1, R=CH3, R′=CH3) was prepared in an optical purity of 96% from the mesylate of methyl (S)-lactate (ee 97
使用相应的旋光2-羟基羧基☐磺酸酯和氟化钾的磺酸盐2,开发了旋光2-氟丙酸1(R = CH 3,R'= H)和高对映体纯度的类似物的非常简单的合成方法。甲酰胺。因此,由(S)-乳酸甲酯(ee 97.4%)的甲磺酸酯制备光学纯度为96%的(R)-2-氟丙酸甲酯(1,R = CH 3,R′= CH 3),并分离。产率83%。