1,3-Di(alkoxycarbonylamino)propanes of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 can be identical or different and each is hydrogen, or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, and R.sup.4 is an aliphatic, cycloaliphatic or araliphatic radical, are prepared by reacting an .alpha.,.beta.-unsaturated aldehyde with a carbamic acid ester by reacting in a first stage as the .alpha.,.beta.-unsaturated aldehyde a compound of the general formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the abovementioned meanings, with a carbamic acid ester of the general formula III ##STR3## where R.sup.4 has the abovementioned meanings, at 0.degree.-150.degree. C. to give a 1,1,3-tri(alkoxycarbonylamino)propane of the general formua IV ##STR4## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the abovementioned meanings, and in a second stage heating the compound of the general formula (IV) in the presence of a hydrogenation catalyst and hydrogen under 1-300 bar at 100.degree.-300.degree. C.
通式I的1,3-二(烷氧羰基
氨基)
丙烷,其中R.sup.1,R.sup.2和R.sup.3可以相同也可以不同,每个是氢,或脂肪,环脂肪,芳基或脂环基基团,而R.sup.4是脂肪,环脂肪或脂环基基团,通过将α,β-不饱和醛与
氨基甲酸酯反应制备而成。在第一阶段反应中,将通式II的化合物与通式III的
氨基甲酸酯反应,其中R.sup.1,R.sup.2和R.sup.3具有上述含义,而R.sup.4具有上述含义,在0℃-150℃下反应,以给出通式IV的1,1,3-三(烷氧羰基
氨基)
丙烷,其中R.sup.1,R.sup.2,R.sup.3和R.sup.4具有上述含义,并在第二阶段在氢化催化剂和
氢气存在下,在1-300巴,100℃-300℃下加热通式IV的化合物。