反应详情

Compound 67 (1.10 g, 923%) was produced as an oily product from 4-tert-butoxycarbonylaminobenzoic acid (0.57 g, 2.4 mmol), the compound produced in Example 17 (0.83 g, 2.0 mmol), triethylamine (0.28 mL, 2.0 mmol), WSC.HCl (0.46 g, 2.4 mmol) and CH2Cl2 (10 mL) according to the same manner as in Example 30. After that, Compound 67 (0.95 g, 1.6 mmol) was dissolved in dioxane (2.4 mL), 4 mol/L hydrogen chloride/dioxane (2.4 mL) was added thereto and the mixture was stirred for 20 hours at room temperature. The crystals produced after evaporation of the solvent therefrom in vacuo were filtered from petroleum ether to give Compound 61 (0.55 g, 65%).

1. customThe crystals produced
2. customafter evaporation of the solvent
3. filtrationin vacuo were filtered from petroleum ether