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公开(公告)号:US06660869B2
公开(公告)日:2003-12-09
申请号:US10041666
申请日:2002-01-10
申请人: Rudolfus A. T. M. Van Benthem , Jacobus A. Loontjens , Patrick H. M. Hendriks , Bartholomeus J. M. Plum
发明人: Rudolfus A. T. M. Van Benthem , Jacobus A. Loontjens , Patrick H. M. Hendriks , Bartholomeus J. M. Plum
IPC分类号: C07D26302
CPC分类号: C09D5/033 , C07D263/10 , C07D263/14
摘要: 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.
摘要翻译: 本发明涉及一种制备芳族双恶唑啉的方法,其中在第一步中芳族羧酸或其酯与烷醇胺反应,之后得到的羟基烷基酰胺在第二步中转化为芳族双恶唑啉, 催化剂的存在。 催化剂是次膦酸,(C 1 -C 26)烷基次膦酸,(C 6 -C 20)芳基次膦酸或衍生自这些酸之一的酯或酸酐。