Preparation of an aromatic bisoxazoline
AssigneeDsm N.V.
InventorsRudolfus A. T. M. Van Benthem, Jacobus A. Loontjens, Patrick H. M. Hendriks, Bartholomeus J. M. Plum
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Abstract
The invention relates to a process for the preparation of an aromatic bisoxazoline in which, in a first step, an aromatic carboxylic acid or an ester hereof reacts with an alkanolamine, after which the hydroxyalkylamide obtained is in a second step converted into an aromatic bisoxazoline in the presence of a catalyst. The catalyst is phosphinic acid, a (C1-C26) alkyl phosphinic acid, a (C6-C20)aryl phosphinic acid or an ester or an anhydride derived from one of these acids.
Claims9
A process for the preparation of an phenylene or napthalene bisoxazoline, wherein, in a first step, an phenylene or napthalene carboxylic acid or an ester thereof reacts with an alkanolamine, after which the hydroxyalkylamide obtained is in a second step converted into an phenylene or napthalene bisoxazoline in the presence of a catalyst.
Dependencies are inferred from the claim text.