反应详情

40.2 g (131 mmol) of the compound from Example 2 are stirred at 50° C. for 3 h with 16.1 g (0.3 mol) of potassium hydroxide in 200 ml of methanol. After distilling off the solvent, the residue is taken up in ether, washed with water, dried using sodium sulphate and recrystallized from ethyl acetate/petroleum ether.

1. distillationAfter distilling off the solvent
2. washwashed with water
3. customdried
4. customrecrystallized from ethyl acetate/petroleum ether