Palladium-Catalyzed Alkylarylation of Acrylamides with Unactivated Alkyl Halides
作者:Hua Wang、Li−Na Guo、Xin-Hua Duan
DOI:10.1021/acs.joc.5b02433
日期:2016.2.5
An efficient palladium-catalyzed alkylarylation of acrylamides with unactivatedalkyl halides has been developed. This method is highlighted by its broad substrate scope and excellent functional group tolerance. In addition to alkyl halides, fluoroalkyl halides and benzyl bromides also participated well in this transformation. A detailed mechanistic investigation suggests that a radical pathway is
catalysis is an efficient process for the alkylation of diverse organic compounds via the generation of alkyl radicals from alkyl bromides and iodides. However, the generation of alkyl radicals from more stable alkyl chlorides remains challenging. Herein, we demonstrate the excited-state palladium-catalyzed synthesis of oxindoles and isoquinolinediones via alkylation/annulation reaction by overcoming
Visible light-induced PPh2Cy/CsI-promoted cascade radical decarboxylative/cyclization of redox-active esters with acrylamides
作者:Xu Fan、Hui Liu、Shidi Ma、Feng Wang、Jinhui Yang、Dianjun Li
DOI:10.1016/j.tet.2022.132849
日期:2022.7
PPh2Cy/CsI-promoted tandem radical decarboxylative/alkylarylation of alkyl substituted redox-active esters and N-acrylamides to generate 3,3-dialkyl substituted oxindoles and isoquinoline-1,3-diones derivatives was developed under metal-free conditions. This transformation provides an alternative and mild method for the synthesis of highly functionalized five- and six-membered nitrogen-containing compounds
Photoinduced Cerium‐Mediated Decarboxylative Alkylation Cascade Cyclization of
<i>N</i>
‐arylacrylamides and
<i>N‐</i>
acryl‐2‐aryl benzimidazoles
作者:Neha Dagar、Swati Singh、Sudipta Raha Roy
DOI:10.1002/asia.202300028
日期:——
An operationally simple and efficient photoinduced decarboxylative radical alkylation/cyclization has been developed utilizing inexpensive cerium catalyst and feedstock carboxylic acids as alkyl radical surrogates under aerobic conditions. This catalytic manifold allows straightforward access to a wide range of quaternary C3 alkylated oxindoles and benzo[4,5]imidazo[2,1-a]isoquinolin-6(5H)-one derivatives
在有氧条件下,利用廉价的铈催化剂和原料羧酸作为烷基自由基替代物,开发了一种操作简单且有效的光诱导脱羧自由基烷基化/环化。这种催化歧管允许直接获得范围广泛的季 C3 烷基化羟吲哚和苯并 [4,5] 咪唑并 [2,1- a ] 异喹啉-6(5 H )-一种衍生物,提供出色的官能团耐受性。