An efficient C–N cross-coupling approach for the synthesis of hydrazones was developed through C(sp2)–H and C(sp3)–H functionalization of indole and methylarene under visible light irradiation using photocatalyst eosin Y, ethanol:water as a green solvent and atmospheric air as an oxidant. With the aid of eosin Y, the C–H bonds of indole and methylarenes were activated followed by coupling with arylhydrazines
Palladium‐Catalyzed Isocyanide Insertion into the Remotely Activated N−H bond of 3‐(Phenylhydrazono)oxindoles: Facile Access to Indole‐N‐Carboxamide Derivatives
作者:Pooja Soam、Debasish Mandal、Vikas Tyagi
DOI:10.1002/ejoc.202400439
日期:2024.8.12
method for accessing indole-based N-carboxamide derivatives by palladium-catalyzed isocyanideinsertion into the N−H bond of 3-(phenylhydrazono)oxindole is developed. Further, control experiments and Conceptual DFT calculation suggest that the 3-phenylhydrazone group plays a crucial role in remotely activating the N−H bond of oxindole derivatives. In addition, it has been observed that the reaction‘s outcome