申请人:NITTO CHEMICAL INDUSTRY CO., LTD.
公开号:EP0816316A1
公开(公告)日:1998-01-07
A process for preparing a 1,2-ethanediol derivative in a high yield by reducing an α-hydroxy carboxylic acid ester derivative in a protic solvent or a hydrous aprotic polar solvent in the presence of a sodium boron hydride compound. A process for preparing a 1,2-ethanediol derivative in a high yield by esterifying an α-hydroxy carboxylic acid derivative to synthesize an α-hydroxy carboxylic acid ester derivative, and reducing this ester derivative in a protic solvent or a hydrous aprotic polar solvent in the presence of a sodium borohydride compound in the same reaction vessel.
一种在氢化硼钠化合物存在下,通过在原生溶剂或含水非丙烯极性溶剂中还原 α-羟基羧酸酯衍生物,以高产率制备 1,2-乙二醇衍生物的工艺。一种通过酯化α-羟基羧酸衍生物合成α-羟基羧酸酯衍生物,并在同一反应容器中,在有硼氢化钠化合物存在的情况下,在质子溶剂或含水非丙烷极性溶剂中还原该酯衍生物,从而高产率制备1,2-乙二醇衍生物的工艺。