Syntheses of Anthracenones. 3. Revised Preparative Route to 10-Benzoyl-1,8-dihydroxy-9(10<i>H</i>)-anthracenones
作者:Helge Prinz、Wolfgang Wiegrebe、Klaus Müller
DOI:10.1021/jo952037l
日期:1996.1.1
8-diacetoxy-9(10H)-anthracenone with benzoyl chloride and sodium hydride in THF followed by hydrolysis of an intermediate enol ester. Furthermore, when benzoyl chloride and DMF were used for the acylation of anthralin, a Vilsmeier-type reaction was observed leading to a novel enamine derivative of anthralin which was hydrolyzed or benzoylated to an enol or enol ester, respectively.
发现蒽林(1,8-二羟基-9(10H)-蒽酮)与乙酰水杨酰氯在甲苯和可力丁中的酰化作用产生的是O-酰化产物,而不是10-(乙酰水杨基)蒽林。描述了在10位上的蒽醌苯甲酰化的方法,该方法包括使1,8-二乙酰氧基-9(10H)-蒽酮与苯甲酰氯和氢化钠在THF中反应,然后水解中间体烯醇酯。此外,当苯甲酰氯和DMF用于蒽环的酰化时,观察到Vilsmeier型反应,导致蒽环的新烯胺衍生物水解或苯甲酰化为烯醇酯或烯醇酯。