A relay catalytic cascade process involving Lewis acid triggered ring-opening of cyclopropyl ketones with nitriles, the copper(I)-catalyzed Ritter process, and acid-promoted N-acyliminium ion cyclization is described, which efficiently provides thieno-, furano-, and benzo-indolizinones in moderate to good yields.
报道了一种涉及
路易斯酸引发的环丙基酮与腈的环展开反应、
铜(I)催化的Ritter反应以及酸促进的N-酰基
亚胺离子环化的接力式催化级联过程,该过程能以中等至良好的产率高效合成
噻吩并、
呋喃并和苯并引朵嗪
酮类化合物。