Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1986-04-29
1987-06-09
Helfin, Bernard
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560115, 560158, C07C12507, C07C125073, C07C125075
Patent
active
046721371
ABSTRACT:
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.
REFERENCES:
patent: 3277098 (1966-10-01), Mexten
Chem. Rev. 65 583 (1965).
Houben-Weyl, 4th ed., vol. VIII, p. 138.
Liebe Joerg
Merger Franz
BASF - Aktiengesellschaft
Helfin Bernard
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