Hydrogen Bromide → HCID 20514582, compound

Participants

Reaction Steps

A mixture of 10 parts of 7-ethoxy-2,3-dihydroimidazo[2,1-b]benzothiazole and 150 parts of hydrobromic acid solution 48% in glacial acetic acid is stirred and refluxed overnight. The reaction mixture is evaporated. The solid residue is washed with ethanol and crystallized from ethanol 80%. The product is filtered off and dried, yielding 8 parts of 2,3-dihydroimidazo[2,1-b]benzothiazol-7-ol monohydrobromide; mp. 259.9° C.

Provenance & Evidence