Semi-empirical AM1 and PM3 molecular orbital calculations on the
mechanism of the hydrolysis of unsaturated lactones: substituted
(E
)-5,5′-diphenylbifuranylidenediones
and 3,7-diphenylpyrano[4,3-c]pyran-1,5-diones
Abstract
![](https://www.rsc.org/images/entities/char_200a.gif)
![](https://www.rsc.org/images/entities/char_200a.gif)