Cp*Co(<scp>iii</scp>)-catalyzed C–H amination/annulation cascade of sulfoxonium ylides with anthranils for the synthesis of indoloindolones
作者:Yogesh N. Aher、Amit B. Pawar
DOI:10.1039/d1cc02817k
日期:——
Cp*Co(III)-catalyzed [4+1] annulation of sulfoxonium ylides with anthranils has been developed for the synthesis of indole–indolone scaffolds. The dual functionality of anthranils was exploited, wherein the nitrogen has been used for C–H amination and the aldehyde group was utilized in the subsequent intramolecular aldol condensation to furnish the corresponding annulated products.
Cp*Co( III )-催化的锍叶立德与邻氨基苯甲酸的[4+1]环化已被开发用于合成吲哚-吲哚酮支架。利用了邻氨基苯甲酸的双重功能,其中氮用于 C-H 胺化,醛基用于随后的分子内醇醛缩合以提供相应的环状产物。
Highly Diastereo- and Enantioselective Synthesis of Tetrahydrobenzo[b]azocines via Palladium-Catalyzed [4 + 4] Cycloaddition
作者:Can Gao、Xunhua Wang、Jitian Liu、Xiaoxun Li
DOI:10.1021/acscatal.0c05515
日期:2021.3.5
The construction of N-heterocyclic eight-membered rings with good regio-, stereo-, and enantioselective control remains a formidable challenge in asymmetric catalysis. Herein, we report a palladium-catalyzed asymmetric [4 + 4] cycloaddition of anthranils with γ-methylidene-δ-valerolactones in the presence of Et3B, delivering highly functionalized tetrahydrobenzo[b]azocine derivatives in high efficiency
An iron‐catalyzed electrophilicamination of sodium sulfinates with anthranils to generate N‐(2‐carbonylaryl) benzenesulfonamides with high atom efficiency under redox‐neutral conditions has been developed.