C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 453/02 (2006.01) B01J 31/02 (2006.01) C07B 43/06 (2006.01) C07D 403/14 (2006.01) C07D 501/06 (2006.01) C07K 1/06 (2006.01) C07K 1/10 (2006.01) C07K 5/00 (2006.01)
Patent
CA 2331850
A method of preparing carboxylic acid derivatives comprising mixing a quaternary ammonium salt having a particular triazine ring in the molecules thereof, a carboxylic acid compound and a compound having a nucleophilic functional group, to condense the carboxylic acid with the compound having the nucleophilic functional group. The invention further provides a condensing agent comprising the quaternary ammonium salt. The condensation is conducted under mild conditions to form carboxylic acid derivatives and, particularly, amide compounds or ester compounds maintaining high yields.
L'invention concerne un procédé d'obtention d'un dérivé d'acide carboxylique consistant à mélanger un sel d'ammonium quaternaire ayant un noyau de triazine spécifique dans la molécule, un composé d'acide carboxylique et un composé ayant un groupe fonctionnel nucléophile permettant de faire réagir par condensation le composé d'acide carboxylique avec le composé ayant un groupe fonctionnel nucléophile ; et un agent de condensation comprenant le sel d'ammonium quaternaire. Selon le procédé, la réaction par condensation peut être réalisée dans des conditions douces et on peut obtenir en grande quantité un dérivé d'acide carboxylique, notamment un composé d'amide ou d'ester.
Hirano Naoki
Iwasaki Fumiaki
Kunishima Munetaka
Miharu Michiko
Saijyo Masako
Smart & Biggar
Tokuyama Corporation
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