反应详情

温度

90 °C

A mixture of 2-(2H-benzotriazol-2-yl)-4-methyl-phenol (100.0 g, 0.44 mol), paraformaldehyde (26.4 g, 0.88 mol), sulphuric acid (10.9 g, 110 mmol), conc. HCl (200 mL), and acetic acid (500 mL) is heated to 90° C. for six hours. The precipitated product is isolated by filtration and washed subsequently with AcOH, AcOH:heptane (1:1), and heptane and dried at 45° C. (95% yield).

1. customThe precipitated product is isolated by filtration
2. washwashed subsequently with AcOH, AcOH:heptane (1:1), and heptane
3. customdried at 45° C. (95% yield)