Process for Preparing Esteramide Compounds
AssigneeRhodia Operations
InventorsThierry Vidal, Rabih Rached, Massimo Guglieri
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Abstract
The present invention concerns a process for preparing esteramide compounds. More particularly, the invention relates to a process for preparing esteramide compounds by reaction between a diester and an amine, in the presence of a basic compound, wherein the basic compound and the amine in gaseous form are co-added to the diester, the reaction being conducted at a temperature of 30° C. or higher.
Claims18
A process for preparing an esteramide compound of following formula (I):
- R1OOC-A-CONR2R3 (I)
- comprising a reaction step between:
- a diester compound of following formula (II):
- R1OOC-A-COOR1 (II)
- and an amine of following formula (III):
- HNR2R3 (III)
- in the presence of a basic compound,
- formulae in which:
- A is a covalent bond or a straight-chain or branched divalent alkylene group comprising a number of carbon atoms ranging from 1 to 12,
- R1 is an optionally substituted hydrocarbon group, comprising from 1 to 36 carbon atoms,
- R2 and R3, the same or different, are groups chosen from the hydrogen atom and the hydrocarbon groups, optionally substituted, comprising from 1 to 36 carbon atoms,
- R2 and R3 are able together to form a ring comprising the nitrogen atom with which they are linked, the said ring possibly being substituted and/or comprising an additional heteroatom, and
- R2 and R3 not simultaneously being hydrogen atoms,
- characterized by the fact that :
- the amine of formula (III) in gaseous form and the basic compound are co-added to the diester compound of formula (II),
- and the reaction is conducted at a temperature of 30° C. or higher.
The process according to claim wherein the reaction is conducted at a temperature comprised from 30° C. to 130° C., preferably from 40° C. to 90° C. and further preferably from 45° C. to 65° C.
Dependencies are inferred from the claim text.