Tetrahydrofuran → [4-(3,5-Dimethylpyridin-2-yl)piperazin-1-yl][4-(1,1-dioxo-1lambda6-isothiazolidin-2-yl)-2-methylphenyl]methanone hydrobromide

Participants

Reaction Steps

[4-(3,5-Dimethylpyridin-2-yl)piperazin-1-yl][4-(1,1-dioxo-1λ6-isothiazolidin-2-yl)-2-methylphenyl]methanone (5.00 g) described in Example 154 was dissolved in acetic acid (20 mL), and 25% hydrogen bromide/acetic acid (3.3 mL) was added at 50° C. The reaction mixture was allowed to cool to room temperature, tetrahydrofuran (200 mL) was added, and the precipitate was collected by filtration. The obtained precipitate (5.52 g) was recrystallized from ethanol (110 mL) to give the title compound (4.67 g).

Provenance & Evidence