反应详情

The title compound is prepared by the procedure of Example 32 using 40 g of the product from Example 46, 320 ml of methyl alcohol, 125 ml ethyl alcohol, 20 ml of water and 17.8 g of potassium hydroxide. The residue is recrystallized from chloroform/hexane to give 32 g of the desired product as white crystals.

1. customThe residue is recrystallized from chloroform/hexane