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 inverse electron demand (LUMOdienecontrolled) and normal(HOMOdienecontrolled) Diels-Alder reactions. Approaches
提出了具有代表性的缺电子,富电子和中性二烯的环丙烯酮缩酮1的Diels-Alder环加成反应。观察到的结果与环丙烯酮缩酮的应变烯烃在反电子需求(LUMO二烯控制)和正电子(HOMO二烯控制)Diels-Alder反应中显示出加速参与的潜力相一致。提出了基于环丙酮缩酮1的室温和压力促进的Diels-Alder反应引入环庚酮,对苯二酚的方法。