Concise synthesis and characterization of unsymmetric 1,3-benzoxazines by tandem reactions
作者:Muhammad Imran、Baris Kiskan、Yusuf Yagci
DOI:10.1016/j.tetlet.2013.07.041
日期:2013.9
A new synthetic protocol for the preparation of unsymmetric 1,3-bisbenzoxazines using the combination of three-step synthesis and classical one-step benzoxazine synthesis strategies is described. For this purpose, 4-hydroxyphenylaminomethyl phenol (HPAMP) is synthesized as the intermediate and reacted with two different aliphatic amines to yield the desired unsymmetric bisbenzoxazines. The structures
描述了使用三步合成和经典一步苯并恶嗪合成策略相结合制备不对称1,3-双苯并恶嗪的新合成方案。为此目的,合成4-羟基苯基氨基甲基苯酚(HPAMP)作为中间体,并与两种不同的脂族胺反应,生成所需的不对称双苯并恶嗪。中间体和产物的结构通过FT-IR和1 H NMR光谱分析确认。通过差示扫描量热法(DSC)研究了双苯并恶嗪的固化行为。