Ethyl bromoacetate → HCID 19607848, compound

Participants

Reaction Steps

A mixture of 5-methylamino-4-hydroxy-1-[4-(2-chlorobenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.13 g), ethyl α-bromoacetate (58 mg), diisopropylethylamine (49 mg) and acetonitrile (5 ml) is refluxed for 10 hours. Acetonitrile is distilled off under reduced pressure, and the resulting residue is dissolved in dichloromethane, washed with water, dried over magnesium sulfate, and distilled off under reduced pressure. The resulting residue is purified by silica gel column chromatography (eluent; dichloromethane:methanol=50:1), and recrystallized from chloroform/methanol to give 7-[4-(2-chlorobenzoylamino)benzoyl]-1-methyl-1,2,3,4a,5,6,7,11b-octahydro-3-oxo[1]benzazepino[4,5-b][1,4]oxazine (80 mg) as colorless prisms, m.p. 286-290° C.

Provenance & Evidence