Use of Phenacyl Thiosalicylates for the Preparation of 3-Hydroxybenzo[b]thiophene Derivatives
作者:Miroslav Soural、Patricia Trapani、Lubomír Kvapil、Pavel Hradil
DOI:10.1055/s-0036-1591875
日期:2018.4
In this work, we attempted to synthesize thioflavonols using rearrangement of phenacyl thiosalicylates prepared by two different approaches and subjected to cyclization under acidic conditions. Contrary to our expectations, the isolated products were identified as (3-hydroxybenzo[b]thiophen-2-yl)(phenyl)methanones. The detailed reaction mechanism was elucidated by characterization of all reaction intermediates
在这项工作中,我们尝试使用通过两种不同方法制备的苯甲酰硫代水杨酸酯的重排合成硫代黄酮醇,并在酸性条件下进行环化。与我们的预期相反,分离出的产物被鉴定为(3-羟基苯并[b]噻吩-2-基)(苯基)甲酮。通过使用 HPLC 和 NMR 光谱对所有反应中间体进行表征,阐明了详细的反应机理。测试了使用不同苯甲酸酯的反应的适用性。