反应详情

A solution of intermediate D (32.7 g) in acetone (500 ml) was added to cyanuric chloride (18.5 g) in acetone (150 ml) at 0° C. and stirred at this temperature for 2 hours, maintaining the pH at 6 with 0.5M sodium hydroxide solution. The precipitated solid was filtered off, washed with ice cold water (2×250 ml) and dried to give the damp product (65.2 g).

1. filtrationThe precipitated solid was filtered off
2. washwashed with ice cold water (2×250 ml)
3. customdried