反应详情

A mixture of 4-(4-methyl-piperazin-1-yl)-2-nitro-benzoic acid tert-butyl ester (16.4 g, 51 mmol) and 37% HCl (100 mL) in 1,4-dioxane (200 mL) was stirred at room temperature for 4 hours. The resulting solid was filtered, washed thoroughly with 1,4-dioxane and dried under vacuum at 45° C. The title compound was obtained as a pale yellow solid (13.45 g, 87.5% yield), and it was used in the next step without any further purification.

1. filtrationThe resulting solid was filtered
2. washwashed thoroughly with 1,4-dioxane
3. customdried under vacuum at 45° C