Ultrasound-Assisted Metal-Mediated Method for the Formation of Tetrahydro-3,3′-Disubstituted Biscoumarins
作者:Ana Koleva、Nevena Petkova-Yankova、Rositca Nikolova
DOI:10.3390/molecules23112810
日期:——
A new method for faster and simple preparation of 3,3',4,4'-tetrahydro-3,3'-disubstituted-4,4'-biscoumarins with participation of an organozinc reagent is reported. The reaction is promoted by ultrasound irradiation and it offers a simple experimental setup and excellent reproducibility of the results. Moreover, homodimers were isolated in yields of 45⁻92%. The dimerization conditions are applicable
报道了一种在有机锌试剂参与下更快,更简单地制备3,3',4,4'-四氢-3,3'-二取代-4,4'-双香豆素的新方法。超声波辐射可促进该反应,它提供了简单的实验设置和出色的结果可重复性。此外,分离出同二聚体的产率为45-92%。二聚条件适用于在第三位置具有吸电子基团的香豆素。