Hydrogen Bromide → HCID 70342591, compound

Participants

Reaction Steps

1.72 g (2.88 mmol) of phenylmethyl [6-chloro-8-[5-oxo-4-[1-(4,4,4-trifluorobutyl)piperidin-4-yl]-4,5-dihydro-1,3,4-oxadiazol-2-yl]-2,3-dihydro-1,4-benzodioxin-5-yl]carbamate and 17 ml of acetic acid are introduced into a 100 ml round-bottomed flask, 5 ml of 33% hydrobromic acid in acetic acid are added and the mixture is stirred at room temperature for 7 h. Diethyl ether is added to the precipitate which has formed and 1.8 g of hydrobromide are collected by filtration. It is taken up in water and chloroform, sodium hydroxide is added in order to release the base and, after the usual treatment of the organic phase, 1.19 g of compound are obtained. Melting point: 188° C.

Provenance & Evidence