<scp>Pd‐Catalyzed</scp>
Asymmetric Synthesis of 3,
<scp>4‐Dihydroisoquinolinones</scp>
From
<scp>
<i>N</i>
‐Ts‐Benzamides
</scp>
and 1,
<scp>3‐Dienes</scp>
作者:Tae Kyun Kim、So Won Youn
DOI:10.1002/bkcs.12227
日期:2021.3
A Pd(II)‐catalyzed asymmetric oxidative annulation of N‐Ts‐benzamides with 1,3‐dienes using a chiral pyridine‐oxazoline‐type ligand for the regio‐ and stereoselective synthesis of chiral 3,4‐dihydroisoquinolinones has been developed.
Synthesis of 2-Imidazolines via Palladium-Catalyzed Cyclization Reaction of 2,3-Allenyl Amines and Aryl Iodides
作者:Yue Liu、Cheng Zhang、Xiaoxia Liang、Xianzhong Zeng、Rongmei Lu、Zixuan Fang、Shaoyu Wang、Yanjun Liu、Jinxing Hu
DOI:10.1055/s-0037-1610742
日期:2020.3
An effective method for the synthesis of polysubstituted 2-imidazoline derivatives via palladium-catalyzed cyclization of 2,3-allenyl amines with aryl iodides is described. This pure domino process allows the formation of new carbon–carbon and carbon–nitrogen bonds in a single synthetic operation.
Facile preparation of N-acylsulfonamides by using sulfonyl isocyanate
作者:Shino Manabe、Tomoyuki Sugioka、Yukishige Ito
DOI:10.1016/j.tetlet.2006.11.158
日期:2007.1
N-Acylsulfonamide is widely used as a carboxylic acid bioisostere. A rapid and mild acyl sulfonamide preparation methodology from carboxylic acid and arylsulfonyl isocyanate in the presence of amine is described. The preparation of biologically active acylsulfonamide by our methodology is also presented.
A synthetic protocol for the expedient construction of 5‐methylene‐1H‐pyrrol‐2(5H)‐one derivatives through rhodium‐catalyzed [4+1] annulation with gem‐difluoroacrylate as the C1 component was reported. By taking advantage of the twofold C−F bond cleavage occurring during the annulation, this reaction not only allows the synthesis of these heterocyclic compounds under overall oxidant‐free conditions
An effective procedure for synthesis of amides from alkenes and PhI=NTs via Pd and Fe catalysts under mild conditions is described. A series of benzamides containing various functional groups can be obtained in reasonable yield and the possible reaction pathway is proposed in this Letter. (C) 2016 Elsevier Ltd. All rights reserved.