反应详情

The title compound is prepared by the procedure of Example 32 using 125.0 g of product from Example 36 in 1 L of methyl alcohol, 60 ml of water, 400 ml of ethyl alcohol and 54.94 g of potassium hydroxide. The residue is recrystallized from chloroform/hexane to give 109 g of the desired product as white crystals.

1. customThe residue is recrystallized from chloroform/hexane