We present a study of the Diels-Alder reaction between various electron-deficient 2H-pyran-2-ones and ethyl vinyl ether. This microwave-accelerated sequence of a cycloaddition followed by a retro-Diels-Alder reaction (the elimination of CO 2 ) and a second elimination step ofEtOH yields substituted aniline derivatives. The reaction sequence is greatly accelerated by the application of DABCO as a suitable
我们研究了各种缺电子 2H-pyran-2-ones 与乙基
乙烯基醚之间的 Diels-Alder 反应。这种微波加速的环加成顺序,随后是逆狄尔斯-阿尔德反应(CO 2 的消除)和EtOH的第二个消除步骤,产生取代的
苯胺衍
生物。使用
DABCO 作为合适的碱大大加快了反应顺序。