反应详情

tert-Butyl N-{4-[(4-isopropyl-1,3-thiazol-2-yl)methoxy]-2-pyridyl}carbamate (706 mg, 2.202 mmol) dissolved in dichloromethane (20 ml) was added dropwise with trifluoroacetic acid (20 ml) under ice cooling, then warmed to room temperature and stirred for 2 hours. The reaction solution was concentrated under reduced pressure, diluted with chloroform, then neutralized with saturated aqueous sodium hydrogencarbonate and extracted with chloroform. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform→chloroform:methanol=50:1→30:1→20:1) to obtain 331 mg (66%) of the title compound.

1. concentrationThe reaction solution was concentrated under reduced pressure
2. additiondiluted with chloroform
3. extractionextracted with chloroform
4. dry with materialThe organic layer was dried over magnesium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by silica gel column chromatography (chloroform→chloroform:methanol=50:1→30:1→20:1)