Methanol → 6-Methyl-1,4-oxazepane hydrochloride

Participants

Reaction Steps

To a solution of 4-(4-methoxy-benzyl)-6-methyl-[1,4]oxazepane (3.24 g, 13.8 mmol) in 1,2-dichloroethane (23 ml) was added 1-chloroethyl chloroformate (4.93 g, 34.5 mmol) at room temperature. The mixture was refluxed for 7 hours. The reaction mixture was cooled to room temperature and then methanol (30 ml) was added. The mixture was refluxed for 5 hours and concentrated in vacuo. This crude product was washed with hexane, dried under reduced pressure to afford 6-methyl-[1,4]oxazepane hydrochloride as white solid (1.73 g, 83%).

Provenance & Evidence