Sodium Hydroxide → HCID 15407423, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 6,6-dimethyl-3-methanesulphonyl-1-(pyrrolidin-1-ylcarbonyl)-4,5,6,7-tetrahydrobenzo[c]thiophen-4-one (400 mg, 1.1 mmol) in EtOH (10 mL) was added NaOH (1.1 mL of a 3 M solution, 3.3 mmol) followed by 2-mercaptothiazole (0.39 g, 3.3 mmol). The mixture was heated at 70° C. for 5 h then the solution was evaporated. The residue was partitioned between EtOAc (20 mL) and NaOH (1 M; 30 mL). The organic phase was separated, dried (Na2SO4) and evaporated. The residue was chromatographed on silica gel, eluting with EtOAc:hexane (2:1), to afford the title compound (120 mg. 28%) as a colourless solid. 1H NMR (250 MHz, CDCl3) δ 1.07 (6H, s), 1.90-1.95 (4H, m), 2.45 (2H, s), 2.83 (2H, s), 3.40-3.62 (4H, m), 7.55 (1H, d, J=3.4 Hz), 7.97 (1H, d, J=3.4 Hz). MS (ES+) 393 (M+1).

Provenance & Evidence