Cesium acetate was found to be the best catalyst for the synthesis of 3-benzylidenephthalide from phthalic anhydride and phenylacetic acid. Reasonable to good yields of different 3-arylmethylenephthalides were isolated from the microwaveGabrielsynthesis, even when phenylthio- and 2-(3-)thienyl- acetic acids were used as the starting material.
Base-catalysed hydrolysis of ?-lactones: reactivity-structure correlations for 3-(substituted phenoxy- and thiophenoxymethylene)-(Z )-1(3H )-isobenzofuranones
作者:Keith Bowden、Richard J. Ranson、Alexander Perj�ssy、Margita L�cov�、O?ga Hritzov�、Walter M. F. Fabian