Intramolecular Formal<i>anti</i>-Carbopalladation/Heck Reaction: Facile Domino Access to Carbo- and Heterooligocyclic Dienes
作者:Martin Pawliczek、Bastian Milde、Peter G. Jones、Daniel B. Werz
DOI:10.1002/chem.201502327
日期:2015.8.24
An intramolecular domino process consisting of a formal anti‐carbopalladation followed by Heck reaction is realized. Complex oligo(hetero)cyclic scaffolds are efficiently obtained in one synthetic step from easily obtainable enyne precursors. In contrast to common syn‐carbopalladation reactions of alkyne units, the carbopalladation employed here is designed to afford an anti‐arrangement of the two
实现了一个分子内的多米诺过程,该过程由正式的抗卡巴巴拉定和随后的Heck反应组成。在一个合成步骤中,从容易获得的烯炔前体中有效地获得了复杂的寡(杂)环骨架。与炔烃单元的常见合成碳-钯缩合反应相反,此处采用的碳酰钯反应旨在提供两个新取代基在新出现的双键上的反排列。前提条件是炔烃旁边的残基应不含任何β-氢原子。该方法为传统的Pd催化无法达到的三取代和四取代双键系统铺平了道路。