4,4'-二氨基-3,3',5,5'-四甲基二苯甲酮的合成研究

SYNTHESIS OF 4, 4'-DIAMINO-3, 3', 5, 5'-TETRAMETHYLBENZOPHENONE

本文研究了4，4’-二氨基-3，3’，5，5’-四甲基二苯甲酮的合成条件和精制方法，较好的反应条件是：DTD2g和氨醌4g加到40ml乙醇中并在外保护下回流4小时，粗品收率93.5。产品提纯方法是重结晶，溶剂选择是关键。利用DSC、元素分析、IR谱和H’－NMR谱确认了产物的组成和结构。

Synthesis and purificatlon of 4, 4'-diamino-3, 3', 5, 5'-tetramethylbenzophenone (DTB) were studied in this paper. The Favourable reaction conditions were that: DTD 2g and chloranil 4g were added into ethanol 40ml and refluxed in 4h under protection of nitrogen and the yield was 93. 5 percent. The purification method was recrystallization. The solvent selection was the key to the synthesis. The composition and structure of DTB were also detected with DSC, element analysis, IR and H1-NMR.