反应详情

A solution of 3-butoxy-4-(1,1-dimethyl-propylamino)-cyclobut-3-ene-1,2-dione (1,20 g, 5 mmol, Example 3), 3,5-dichlorobenzylamine (0.88 g, 5 mmol) and tetrahydrofuran (15 mL) was stirred at room temperature for 3 days. The reaction mixture was processed as in Example 2, Step 4. The crude product was recrystallized (twice) from methanol to provide 1.309 g of the title compound as a white solid: mp 257°-258° C. (dec). MS (m/z) 340/342/344 (M+). HPLC indicates a major component (97%).

1. customThe crude product was recrystallized (twice) from methanol