C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 231/02 (2006.01) C07C 233/03 (2006.01) C07C 233/05 (2006.01) C07C 235/34 (2006.01)
Patent
CA 2720370
The invention relates to a continuous method for producing amides, according to which at least one carboxylic acid of formula (I) R3-COOH (I), wherein R3 is hydrogen or an optionally substituted alkyl group comprising between 1 and 4 carbon atoms, is reacted with at least one amine of formula (II) HNR1R2 (II), wherein R1 and R2 are independently hydrogen ora hydrocarbon group comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is then reacted to form a carboxylic acid amide, under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.
L'invention concerne un procédé continu de production d'amides tertiaires d'acides carboxyliques aliphatiques inférieurs. Ledit procédé est un procédé continu de production d'amides, selon lequel au moins un acide carboxylique de formule (I) R3-COOH (I), où R3 désigne hydrogène ou un groupe alkyle éventuellement substitué ayant entre 1 et 4 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 carboxylique.
Krull Matthias
Morschhaeuser Roman
Scholz Hans Juergen
Seebach Michael
Clariant Finance (bvi) Limited
Fetherstonhaugh & Co.
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