C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 231/02 (2006.01) C07C 235/06 (2006.01)
Patent
CA 2720347
The invention relates to a method for producing carboxylic acid amides, according to which at least one carboxylic acid of formula (I) R3-COOH (I), wherein R3 is hydrogen or an optionally substituted hydrocarbon radical comprising between 1 and 50 carbon atoms, is reacted with at least one amine of formula (II) HNR1R2 (II), wherein R1 and R2 are independently hydrogen or an optionally substituted hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is reacted in the presence of superheated water, under microwave irradiation, to form a carboxylic acid amide.
L'invention concerne un procédé continu de production d'amidesd'acide hydroxycarboxylique, selon lequel au moins un acide hydroxycarboxylique de formule (I) HO-R3-COOH (I), où R3 désigne un reste hydrocarbure aliphatique éventuellement substitué ayant entre 1 et 100 atomes de carbone est mis à réagir avec au moins une amine du formule (II) HNR1R2 (II) où R1 et R2 désignent indépendamment l'un de l'autre hydrogène ou un reste hydrocarbure ayant entre 1 et 100 atomes de C, pour former un sel d'ammonium. Ce sel d'ammonium est ensuite mis à réagir par exposition à des rayonnements de micro-ondes dans un tube de réaction dont l'axe longitudinal se situe dans le sens de propagation des micro-ones d'un applicateur de micro-ondes monomode, pour former de l'amide d'acide hydroxycarboxylique.
Appel Joerg
Hess Joachim
Krull Matthias
Milbradt Robert
Morschhaeuser Roman
Clariant Finance (bvi) Limited
Fetherstonhaugh & Co.
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