The reversibility of the ring-opening step in the hydrolysis of tropone ethylene ketal and tropone trimethylene ketal
作者:Robert A. McClelland、Mahmood Ahmad、George Mandrapilias
DOI:10.1021/ja00498a028
日期:1979.2
Diels-alder cycloaddition reactions of cyclopropenone ketals
作者:Dale L. Boger、Christine E. Brotherton
DOI:10.1016/s0040-4020(01)90567-8
日期:1986.1
Diels-Alder cycloadditions of the cyclopropenone ketal 1 with representative electron-deficient, electron-rich and neutral dienes are presented. The results observed are consistent with the potential for the strained olefin of the cyclopropenone ketal to exhibit accelerated participation in both inverseelectrondemand (LUMOdienecontrolled) and normal(HOMOdienecontrolled) Diels-Alderreactions. Approaches