反应详情

To a solution of Example 4A (7.0 g, 29.7 mmol) in ethanol (100 mL) was added a solution of cyanamide (1.25 g, 29.7 mmol) in diethyl ether (25 mL). The reaction mixture was stirred at room temperature for 3 days. The reaction mixture was then filtered and the filtrate was concentrated to obtain the titled compound. MS (ESI+) m/z 225 (M+H)+.

1. filtrationThe reaction mixture was then filtered
2. concentrationthe filtrate was concentrated