Ethanol → HCID 70284500, compound

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Reaction Steps

A mixture of the crude 3-(2-bromoacetyl)-5-chlorobenzo[b]thiophen (4.2 g), 2-imidazolidinethione (1 g), ethanol (15 ml) and acetic acid (10 ml) was heated under reflux under nitrogen for 18 hours, then allowed to cool to ambient temperature. The resulting solid was collected by filtration, washed with ethanol (15 ml), and dried in vacuo to give 3-(5-chlorobenzo[b]thiophen-3-yl)-5,6-dihydroimidazo[2,1-b]thiazole monohydrobromide as a white solid (2.1 g), m.p. 286°-288° C. (dec.).

Provenance & Evidence