Palladium-Catalyzed Regioselective Coupling Cyclohexenone into Indoles: Atom-Economic Synthesis of β-Indolyl Cyclohexenones and Derivatization Applications
Herein, we report a palladium-catalyzeddehydrogenativecross-coupling of indoles with cyclic enones to give β-indolyl cyclic enones under mild and neutral reaction conditions. The key to the success is to explore a mild condition, which ensures the indole C–H activation and subsequent syn β-hydride elimination through rapid enolization isomerization of Pd(II)-enolate while suppressing other undesired
Choline chloride based eutectic solvents: direct C-3 alkenylation/alkylation of indoles with 1,3-dicarbonyl compounds
作者:Anita Kailas Sanap、Ganapati Subray Shankarling
DOI:10.1039/c4ra05858e
日期:——
C-3 alkenylation/alkylation of indoles depends on the position of the substituent on the indole used in the reaction. C-2 substituted indole results in the formation of C-3 alkenylated indole derivatives, whereas plain indole gives rise to the bis(indolyl)carbonyl derivative instead of the C-3 alkenylation product under the same set of reaction conditions. Deep eutectic mixtures are cost-effective