which are difficult to obtain by conventional strategies, were obtained in good yields. Further synthetic utility of this protocol is highlighted by its excellent regio- and stereocontrol as well as the large-scale synthesis and diverse functional transformations of the synthetic compounds. Moreover, the control experiments probably established the plausible mechanism for this sequential [4 + 3] cyclization/[1
协同叔胺/
钯催化的顺序反应过程,通过
靛红衍生的 Morita-Baylis-Hillman Expansion (MBH)
碳酸盐和叔胺的 [4 + 3] 环化进行已发现并开发了 - 丁基 2-(羟甲基) 烯
丙基碳酸酯,然后进行 [1,3]- 重排。一系列具有两个相邻 β,γ-酰基季碳立构中心的结构多样的螺[
亚甲基环戊烷-1,3'-oxindolines] 以高产率获得,这很难通过常规策略获得。该协议的进一步合成效用以其出色的区域和立体控制以及合成化合物的大规模合成和多种功能转换而突出。此外,对照实验可能为这种顺序 [4 + 3] 环化/[1,3]-重排过程建立了合理的机制。