Ethyl bromoacetate → HCID 22393120, compound

Participants

Reaction Steps

1,1-dioxo-3-butyl-3-ethyl-5-phenyl-7-methoxy-8-hydroxy-2,3,4,5-tetrahydro-1,5-benzothiazepine (WO 9616051; 1.0 g), ethyl bromoacetate (0,50 g), sodium carbonate (1.2 g) and tetrabutylammonium bromide (60 mg) in MeCN (15 ml) were refluxed over night. The solvent was removed under reduced pressure and the residue was extracted (DCM/H2O). The organic layer was separated and the solvent was removed under reduced pressure. The residue purified by chromatography (DCM/EtOAc (90:10)) to give the title compound 1.2 g (98%). NMR (400 MHz, CD3OD) 0.75-0.85 (m, 6H), 1.00-1.30 (m, 8H), 1.35-1.55 (m, 4H), 3.20 (s, 2H), 3.65 (s, 3H), 3.70 (brs, 2H), 4.50 (s, 2H), 6.50 (s, 1H), 6.90-7.30 (m,5H), 7.40 (s, 1H).

Provenance & Evidence