Trifluoroacetic acid → 10-Chloro-1-methyl-8-(phenylsulfonyl)-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole trifluoroacetate

Participants

Reaction Steps

Sodium hydride (60% in mineral oil, 0.010 g, 0.42 mmol) was added to tert-butyl 10-chloro-1-methyl-1,3,4,8-tetrahydro-2H-[1,4]oxazepino[6,7-e]indole-2-carboxylate (Intermediate 43, 18 mg, 0.050 mmol) and benzenesulfonyl chloride (0.030 mL, 0.23 mmol) in DMF (2 mL). The mixture was was stirred at room temperature for 30 minutes. TFA (0.50 mL) was added to the reaction mixture and the solvent was evaporated. The residue was dissolved in DCM (1 mL) and TFA (1 mL) was added. The reaction mixture was stirred for 10 minutes and evaporated. The crude material was purified by preparative HPLC (ACE C8, 0.1% TFA-CH3CN) to give the title compound as a white solid (16.8 mg) in the form of the trifluoroacetate salt. MS m/z 377 [M+H]+.

Provenance & Evidence