Trifluoroacetic acid → HCID 17723874, compound

Participants

Reaction Steps

To a solution of tert-butyl 2-(5-methoxy-2,3-dioxoindolin-1-yl)acetate (0.65 g, 2.231 mmol) in DCM (20 ml), TFA (2.58 ml, 33.5 mmol) was added. The reaction was stirred at room temperature for 72 hours, then the solvent was evaporated to dryness affording 2-(5-methoxy-2,3-dioxoindolin-1-yl)acetic acid that was used in the next step without further purification (0.48 g, 2.041 mmol, 91% yield). MS/ESI+ 235.9 [MH]+

Provenance & Evidence