Proposed are 2-Oxo-1,3-dioxolane-4-carboxylic acid and derivatives thereof, according to the following formula, in which R1 represents a negative charge, hydrogen or can be preferably Me or Et or an n-valent radical, which may be substituted with at most n-1 further 2-oxo-1,3-dioxo- lane-4-carboxyl groups, as well as a process for their preparation by means of carboxylation of the corresponding epoxides, a process for their transesterification and their use for the preparation of hydroxyurethanes and as end groups for the blocking of amines.
提议的是2-Oxo-1,3-二氧杂
环戊烷-4-
羧酸及其衍
生物,根据以下公式,在其中R1代表负电荷、氢或可以是甲基或乙基或一个n价基团,该基团可以被至多n-1个进一步的2-氧代-1,3-二氧杂
环戊烷-4-羧基取代,以及一种通过对应环氧化合物的羧化制备它们的方法,一种它们的酯交换反应方法以及它们用于制备羟基
脲和作为阻断胺基的末端基团的用途。