反应详情

In a 1000 mL round bottom flask, tert-butyl 2,4-dimethoxybenzyl(6-(diphenylmethyleneamino)-1-methyl-1H-imidazo[4,5-c]pyridin-4-yl)carbamate (example 1C, 9.2 g, 15.93 mmol) was stirred in THF (50 mL). 1 N HCl (33 mL) was added. After 2 min, the reaction was quenched with 1 N NaOH (65 mL) and ethyl acetate (100 mL). The organic layer was separated, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was dried under vacuum for 1 h and triturated with ether (4×). Isolated tert-butyl 6-amino-1-methyl-1H-imidazo[4,5-c]pyridin-4-yl(2,4-dimethoxybenzyl)carbamate (6.587 g, 15.93 mmol, 100% yield) as a cream solid. Material carried forward with no further purification.

1. customthe reaction was quenched with 1 N NaOH (65 mL) and ethyl acetate (100 mL)
2. customThe organic layer was separated
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe residue was dried under vacuum for 1 h
7. customtriturated with ether (4×)