Acetic Anhydride → 1-acetyl-4-[(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)methyl]piperidin-4-ol

Participants

Reaction Steps

Acetic anhydride (88 μL, 0.922 mmol) was added to a slurry of 4-[(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)methyl]piperidin-4-ol (0.300 g, 0.922 mmol) in chloroform (10 mL). After 16 hours, the solution was purified via automated flash chromatography eluting with a linear gradient of 2-25% CMA in chloroform. The residue was triturated in acetonitrile and isolated by filtration to provide 0.209 g of 1-acetyl-4-[(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)methyl]piperidin-4-ol as a white solid, mp 231-232.5° C.

Provenance & Evidence