Sodium Hydroxide → HCID 57559129, compound

Participants

Reaction Steps

To a solution of 1,6-dihydro-2H-azepino[4,5-b]indole-3,5-dicarboxylic acid 3-tert-butyl ester 5-methyl ester (0.293 g, 0.62 mmol) in MeOH (4 mL) was added 4 N NaOH (2 mL) and the mixture was heated for 5 hours under nitrogen. After cooling, the reaction mixture was diluted with water and extracted with EtOAc. The aqueous layer was acidified with AcOH. Precipitate was collected by filtration and washed with water and ether and dried under high vacuum to give the title compound (70 mg); 1H-NMR (DMSO-d6): δ 11.40 (1H, s), 10.73 (1H, br s), 7.83 (1H, m), 7.73 (2H, d), 7.38 (1H, m), 7.25 (1H, m), 6.88 (2H, m), 3.45 (2H, t), 3.87 (3H, s), 3.2.98 (2H, t), MS (ES): 229 (MH+).

Provenance & Evidence