Ethyl bromoacetate → HCID 22393105, compound

Participants

Reaction Steps

Ethyl bromoacetate (0.13 ml), Na2CO3 (0.40 g) and tetrabutylammonium bromide (0.030 g) were added to a solution of 1,1-dioxo-3,3-dibutyl-5-phenyl-7-methoxy-8-hydroxy-2,3,4,5-tetrahydro-1,5-benzothiazepine (synthesised by the of WO9616051 for the corresponding 3-butyl-3-ethyl analogue; 0.400 g, 0.927 mmol) in MeCN (10 ml). The suspension was heated under reflux overnight before most of the solvent was removed under reduced pressure. The crude product was extracted (DCM/H2O) and filtered through a short silica-column (DCM:EtOAc-1:4) to give the title compound 0.476 g (99%). NMR (400 MHz 0.65-0.85 (m, 6H), 0.95-1.65 (m, 8H), 3.00-3.15 (m, 2H), 3.50-3.80 (m, 2H), 3.70-3.80 (s, 3H), 5.60 (s, 1H), 5.65 (d, 1H), 7.00-7.60 (m, 17H), 8.05-8.20 (d, 1H).

Provenance & Evidence