Abstractmagnified image The usefulness of 3‐iodoindole available for introduction of an indole unit is presented. The reaction of 3‐iodoindole with 2‐bromo(or methyl)‐1,4‐naphthoquinone in acetic acid gave 2‐bromo(or methyl)‐3‐(3‐indolyl)‐1,4‐naphthoquinone. On the other hand, the reaction of 3‐iodoindole with 2‐bromo‐1,4‐naphthoquinone in the presence of cesium carbonate in acetonitrile produced 2‐(1‐indolyl‐3‐iodo)‐1,4‐naphthoquinone. J. Heterocyclic Chem., (2010).
introduction of an indole unit into the 1,4-naphthoquinone skeleton is described. The reaction of the indoles with 1,4-naphthoquinones in CH3CN in the presence of Pd(OAc)2 gave the corresponding 2-(3-indolyl)-1,4-naphthoquinones in moderate yield.
One‐Pot Mechanochemical Synthesis of Mono‐ and Bis‐Indolylquinones via Solvent‐Free Multiple Bond‐Forming Processes
作者:Marta Piquero、Cristina Font、Natalia Gullón、Pilar López‐Alvarado、J. Carlos Menéndez
DOI:10.1002/cssc.202101529
日期:2021.11.4
with fungi: Bis-indolylquinones are fungal natural products endowed with interesting pharmacological properties. Here a new one-pot mechanochemical methodology for the synthesis of indolylquinones is described, which takes place via domino Michael addition/oxidation processes starting from indoles and dihaloquinones in the presence of FeCl3 or p-TsOH as catalysts and Fetizon's reagent as an oxidant
Abstractmagnified image The usefulness of 3‐iodoindole available for introduction of an indole unit is presented. The reaction of 3‐iodoindole with 2‐bromo(or methyl)‐1,4‐naphthoquinone in acetic acid gave 2‐bromo(or methyl)‐3‐(3‐indolyl)‐1,4‐naphthoquinone. On the other hand, the reaction of 3‐iodoindole with 2‐bromo‐1,4‐naphthoquinone in the presence of cesium carbonate in acetonitrile produced 2‐(1‐indolyl‐3‐iodo)‐1,4‐naphthoquinone. J. Heterocyclic Chem., (2010).