Cornforth reagent → Indole-7-carboxaldehyde

Participants

Reaction Steps

Solid pyridinium dichromate (1.77 g, 5.1 mmol) is added in portions over 3 hours to a stirred solution of 7-indolemethanol (0.5 g, 3.4 mmol) in dichloromethane (50 ml). The mixture is stirred for a further 2 hours then filtered through a pad of Celite filter aid. The filtrate is evaporated and the residue purified by chromatography on silica in ethyl acetate-hexane (1:3)

Provenance & Evidence