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41. 发明授权

US06313314B1 Method for preparing azide photo-initiators 有权
标题翻译：叠氮化物光引发剂的制备方法
公开(公告)号：US06313314B1
公开(公告)日：2001-11-06
申请号：US09634466
申请日：2000-08-07
申请人： Kung-Lung Cheng , Shu-Chen Lin , Woan-Shiow Tzeng , Se-Tsun Hong
发明人： Kung-Lung Cheng , Shu-Chen Lin , Woan-Shiow Tzeng , Se-Tsun Hong
IPC分类号： C07D207452
CPC分类号： C07D207/452
摘要： The present invention provides a novel method for the preparation of N-azidosulfonyl-arylimides, which are known as photo-initiators. At the outset, substitution reaction of 4-acetamidobenzenesulfonyl halide with MN3 (M denotes hydrogen or alkaline metal) provides the corresponding azide. After de-protection to remove the actyl group, aminoarylsulfonyl azide is extracted with organic solvent, and the extract is directly used for addition reaction with maleic anhydride without concentration. Finally, end products are obtained by dehydration of the addition products using acetic anhydride/metal acetate, followed by re-crystallization in alcohol solvent. The end products are obtained in purer form and greater yield than that in conventional methods.
摘要翻译：本发明提供了一种制备N-叠氮基磺酰基 - 芳基酰亚胺的新方法，其被称为光引发剂。首先，4-乙酰氨基苯磺酰卤与MN3的取代反应（M表示氢或碱金属）提供相应的叠氮化物。脱保护后除去actyl基团，氨基芳基磺酰基叠氮化物用有机溶剂萃取，提取物直接用于马来酸酐的加成反应而不浓缩。最后，通过使用乙酸酐/金属乙酸酯脱水加成产物，然后在醇溶剂中重结晶获得最终产物。与常规方法相比，最终产品以更纯的形式获得并且产率更高。

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