反应详情

N,N′-Bis{[6-(tert-butyldimethylsilyloxy)methylpyridin-2-yl]methyl}urea (27) (855 mg, 1.61 mmol) was suspended in THF (8.1 mL). The air was evacuated from the reaction system, and then Ar was charged therein. The suspension was stirred at a room temperature. To the suspension was added dropwise 1.0M TBAF in THF (3.7 mL), and further stirred for 5 hours. TLC was used to confirm there was no starting material in the mixture. Then, the reaction mixture was evaporated under reduced pressure. The residue was suction-filtered to give N,N′-bis{[6-(hydroxymethyl)pyridin-2-yl]methyl}urea (28) (812 mg) as white crystals.

1. customThe air was evacuated from the reaction system
2. additionAr was charged
3. additionTo the suspension was added dropwise 1.0M TBAF in THF (3.7 mL)
4. stirringfurther stirred for 5 hours
5. customThen, the reaction mixture was evaporated under reduced pressure
6. filtrationThe residue was suction-filtered