反应详情

To a solution of compound 2 (500 mg, 1.83 mmol) in toluene (2.5 mL) was added t-butyl-trichloroacetimidate (0.33 mL). The reaction was stirred at room temperature for 5 hours. The solid precipitate was filtered off and washed with toluene. The filtrate was concentrated in vacuo to provide compound 3 which was used in the next reaction without further purification.

1. filtrationThe solid precipitate was filtered off
2. washwashed with toluene
3. concentrationThe filtrate was concentrated in vacuo