Pd(II)-Catalyzed [4 + 2] Heterocyclization Sequence for Polyheterocycle Generation
作者:Elizabeth L. Glaisyer、Michael S. Watt、Kevin I. Booker-Milburn
DOI:10.1021/acs.orglett.8b02543
日期:2018.9.21
A new Pd(II)-catalyzed cascade sequence for the formation of polyheterocycles, from simple starting materials, is reported. The sequence is applicable to both indole and pyrrole substrates, and a range of substituents are tolerated. The reaction is thought to proceed by a Pd(II)-catalyzed C–H activated Heck reaction followed by a second Pd(II)-catalyzed aza-Wacker reaction with two Cu(II)-mediated
报道了一种新的Pd(II)催化的级联序列,用于从简单的起始原料形成多杂环。该序列适用于吲哚和吡咯底物,并且可以接受一定范围的取代基。该反应被认为是通过Pd(II)催化的C–H活化的Heck反应进行的,然后是第二个Pd(II)催化的aza-Wacker反应,每个序列有两个Cu(II)介导的Pd(0)转换。该序列可以被认为是正式的[4 + 2]杂环化。