This invention concerns esters of unsymmetrically 2-substituted glycolic acid dimers, a process for their preparation and their use in the preparation of unsymmetrically 3,6-substituted 1,4-dioxane-2,5-diones.
这项发明涉及非对称2-取代
乙二酸二聚物的酯,它们的制备方法以及它们在制备非对称3,6-取代的1,4-二氧杂
环己烷-2,5-二酮中的应用。