Novel Hybrid Prins/Aza-Prins Oxocarbenium/<i>N</i>
-Acyliminium Cascade: Expedient Access to Complex Indolizidines
作者:Mathéo Berthet、Alice Beauseigneur、Charlotte Moine、Catherine Taillier、Mohamed Othman、Vincent Dalla
DOI:10.1002/chem.201705949
日期:2018.1.26
through an unprecedented double Mukaiyama–Mannich–Prins cascade transformation. This novel cascade annulation process demonstrates a promising scope, and takes place mostly catalytically with interesting stereocontrol. Furthermore, an appealing facet of this chemistry is emphasized with a bicatalytic approach by which the Mannich–Prins cascade follows a Ru‐catalyzed N‐allylamide to N‐(E)‐propenyl isomerization
重甲硅烷基烯醇醚(主要是TIPS和TBS)与从其N,O-乙缩醛前体原位生成的环状N-烯基N-酰基亚胺盐结合,通过空前的Mukaiyama-Mannich-Prins级联转化提供了高度官能化的吲哚并咪唑。这种新颖的级联环化工艺展示了一个有前途的范围,并且主要在催化和有趣的立体控制下发生。此外,通过双催化方法强调了该化学的一个吸引人的方面,通过该方法,曼尼希-普林斯级联反应在单罐操作中跟随Ru催化的N-烯丙基酰胺向氨基对应物的N-(E)-丙烯基异构化。