N‐Heterocyclic Carbene‐Catalyzed
<i>β</i>
‐Indolylation of
<i>α</i>
‐Bromoenals with Indoles
作者:Shaofa Sun、Ming Lang、Jian Wang
DOI:10.1002/adsc.201900699
日期:2019.12.17
An unprecedented example of NHC‐catalyzed β‐indolylation of α‐bromoenals with indoles has been developed. This concise protocol features several advantages (mild reaction conditions, broad substrate scope) and constructs synthetically useful building blocks, namely β‐biaryl methylene esters. Notably, the β‐biaryl methylene‐type fragment is widely found in natural products or pharmaceuticals.
已经开发出前所未有的NHC催化的α-溴烯醛与吲哚的β-吲哚化的实例。该简洁的方案具有多个优点(温和的反应条件,广泛的底物范围),并构建了合成上有用的结构单元,即β-联芳基亚甲基酯。值得注意的是,β-联芳基亚甲基型片段广泛存在于天然产物或药物中。