First Electrophilic Substitutions of 3-Substituted Indoles with Diethoxycarbenium Tetrafluoroborate: Functionalized Indole Derivatives
作者:Ulf Pindur、Camran Flo
DOI:10.1002/ardp.19903230205
日期:——
The indoles 2a‐2c react with diethoxycarbeniumtetrafluoroborate (1) to furnish the indolecarbaldehydes 3a‐3d. In the thermodynamically controlled reaction of 3‐methylindole (2a) with 1 the tris(indolyl)methane 4 and diskatole (5), are formed in addition. The limitations of these reactions are discussed and evidence is presented for a C‐3‐ipso‐attack and a Wagner‐Meerwein rearrangement, respectively
The Oxidation of the 2-Methyl Group of 3-Substituted 2-Methylindoles by Autoxidation and with Silver Acetate in Carboxylic Acids
作者:Toshio Itahara、Hiroshi Ouya、Kiyotake Kozono
DOI:10.1246/bcsj.55.3861
日期:1982.12
selective oxidation of the 2-methyl group and the formation of 3-alkyl-2-formylindoles. The formation of the 2-formylindoles was dependent on the nature of the solvent used. The treatment of 3-benzoyl-1,2-dimethylindole with silver acetate gave 2-acetoxymethyl-3-benzoyl-1-methylindole and 3-benzoyl-2-formyl-1-methylindole. The mechanistic implications for the autoxidation and the oxidation with silver