Trifluoroacetic acid → HCID 9968570, compound

Participants

Reaction Steps

4-(3-Benzenesulfonyl-2-methyl-1H-indol-7-yl)-piperazine-1-carboxylic acid tert-butyl ester (0.25 g) was dissolved in 2 mL of dichloromethane and 2 mL of trifluoroacetic acid was added. After 10 min the mixture was concentrated in vacuo, taken into water, and washed with ether. The aqueous layer was basified with ammonium hydroxide, extracted with dichloromethane, and the extract was dried (sodium sulfate) and evaporated to afford the crude free base which was crystallized from dichloromethane-ether to afford 35 mg of 3-benzenesulfonyl-2-methyl-7-piperazin-1-yl-1H-indole (601), m.p. 188-190° C.

Provenance & Evidence