Stereoselective synthesis of (Z)-3-ylidenephthalides via AlCl3-mediated cyclization with 2-acylbenzoic acids
作者:Xujie Wang、Gangsheng Li、Xu Zhang、Ziming Feng、Jianshuang Jiang、Yanan Yang、Peicheng Zhang
DOI:10.1016/j.tetlet.2020.151734
日期:2020.4
An efficient method for the synthesis of (Z)-3-ylidenephthalides is reported in moderate to high yield with AlCl3 as catalyst. Different substrates of the 2-acylbenzoic acids are well performed in the Z/E selectivity. This method is highlighted by the gram-scale synthesis of the natural product (Z)-3-butylidene-5-hydroxyphthalide with anti-inflammatory activity.
报道了一种以AlCl 3为催化剂以中等至高产率合成(Z)-3-亚萘二甲酸酯的有效方法。在Z / E选择性方面,2-酰基苯甲酸的不同底物表现良好。克级合成具有抗炎活性的天然产物(Z)-3-丁叉基5-羟基邻苯二甲酰胺突出了该方法。