反应详情

A mixture of the compound of Example 3 (271 g, 606 M), concentrated ammonium hydroxide (4 L) and tetrahydrofuran (0.5 L) is stirred at room temperature under nitrogen for 4 days. The solvent volume is reduced in vacuo and the resulting residue is triturated with absolute ethanol. The title compound is precipitated out of the ethanolic solvent to yield a light brown solid, (159 g, 87%).

1. customthe resulting residue is triturated with absolute ethanol
2. customThe title compound is precipitated out of the ethanolic solvent
3. customto yield a light brown solid, (159 g, 87%)