SYNTHESIS OF 7-ACETYLENO QUINONE METHIDE DERIVATIVES AND THEIR APPLICATION AS VINYLIC POLYMERIZATION RETARDERS
申请人:Masere Jonathan
公开号:US20120313036A1
公开(公告)日:2012-12-13
The invention provides a method for synthesizing 7-Acetyleno quinone methide compounds that is safe and inexpensive. The method avoids the need for extremely cold reaction temperatures and unlike the prior art does not require any highly explosive materials. The method comprises the steps of
a) performing a condensation reaction between 3,5-di-tert-butyl-4-hydroxybenzaldehyde and a secondary amine thereby forming a secondary amine quinone methide intermediate;
b) removing water from the secondary amine quinone methide intermediate by azeotropic distillation;
c) adding the dehydrated secondary amine quinone methide intermediate to an organic medium containing a metal acetylide to form a Mannich base intermediate; and
d) adding a release agent to the Mannich base intermediate to yield a 7-Acetyleno quinone methide.
本发明提供了一种安全、廉价的合成7-乙炔基喹啉甲醇化合物的方法。该方法避免了需要极低的反应温度,不像先前的技术需要任何高度爆炸性的材料。该方法包括以下步骤:a)在3,5-二叔丁基-4-羟基苯甲醛和二级胺之间进行缩合反应,从而形成二级胺喹啉甲醇中间体;b)通过共沸蒸馏去除二级胺喹啉甲醇中间体中的水分;c)将脱水的二级胺喹啉甲醇中间体加入含有金属乙炔基的有机介质中,形成曼尼希碱中间体;d)向曼尼希碱中间体中加入释放剂,得到7-乙炔基喹啉甲醇。