A Formal [5+1] Annulation Reaction of Sulfur Ylides and 2-(1<i>H</i>-indol-2-yl)phenols: Access to Indole-Fused 4<i>H</i>-benzo[<i>e</i>][1,3]oxazines
作者:Penghao Jia、You Huang
DOI:10.1002/adsc.201800573
日期:2018.8.17
The first sulfur ylides involved formal [5+1]‐annulation reaction was developed between prop‐2‐ynylsulfonium salts and 2‐(1H‐indol‐2‐yl)phenols. Prop‐2‐ynylsulfonium salt participates in the reaction with its β‐carbon atom and acts as a novel C1 synthon. Various indole‐fused 4H‐benzo[e][1,3]oxazines bearing a thioether moiety were constructed in good to high yields under mild conditions.
在丙-2-炔基ulf盐和2-(1 H-吲哚-2-基)酚之间开发了第一个正式的[5 + 1]-环化反应的硫酰化物。丙-2-炔基salt盐与其β-碳原子参与反应,并充当新型C 1合成子。在温和条件下,以良好或高收率构建了各种带有硫醚部分的吲哚稠合的4 H-苯并[ e ] [1,3]恶嗪。