A Pd(0)-catalyzed elimination of an allylic acetate generates a π-allyl complex that is postulated to initiate a novel intramolecular Diels–Alder cycloaddition to a tethered furan (IMDAF). Under the reaction conditions, this convergent, microwave-accelerated cascade process provides substituted indoles in moderate to good yields after Pd-hydride elimination, aromatization by dehydration, and in situ
Pd(0)催化消除
乙酸烯丙酯会生成一个π-烯丙基复合物,该复合物被认为引发了一种新型分子内Diels-Alder环加成到束缚
呋喃(I
MDAF)的过程。在反应条件下,这种会聚的,微波加速的级联过程可在消除Pd-
氢化物,通过脱
水进行芳构化和原位N- Boc裂解后,以中等至良好的收率提供取代的
吲哚。