Water → HCID 18442432, compound

Participants

Reaction Steps

To a solution of 1,1-dioxo-3,3-dibutyl-5-(4-chlorophenyl)-7-methylthio-8-methoxy-2,3,4,5-tetrahydro-1,5-benzothiazepine (Method 98; 0.26 g 0.52 mmol) in anhydrous DCM (10 ml) was added boron tribromide (2.63 g, 10.48 mmol) under nitrogen. The reaction mixture was stirred at room temperature for 2.5 h. The reaction flask was cooled to 0° C., water (20 ml) and hydrazine monohydrate (0.5 ml) was added. The organic layer was separated, dried and evaporated under reduced pressure. The crude product was purified by column chromatography using DCM/EtOAc (100:5 and 100:10) as eluent to give the title compound 0.20 g (80%). NMR (500 MHz) 0.85 (t, 6H), 1.03–1.28 (m, 8H), 1.35–1.46 (m, 4H), 2.39 (s, 3H), 3.21 (s, 2H), 3.73 (s, 2H), 7.04 (d, 2H), 7.29–7.34 (m, 3H), 7.44 (s, 1H); m/z 482.

Provenance & Evidence