Tetrabutylammonium Fluoride → HCID 131733850, compound

Participants

Reaction Steps

To a solution of benzyl ((2R,3S)-2-((4-(((tert-butyldiphenylsilyl)oxy)methyl)-5-((2-nitrophenylsulfonamido)methyl)-2H-1,2,3-triazol-2-yl)methyl)-1-(2,4-dimethoxybenzyl)-4-oxoazetidin-3-yl)carbamate (252 mg, 0.270 mmol) in THF (2.8 mL) at 0° C. was added TBAF (1.0 M in THF, 270 μL, 0.270 mmol). After stirring for 2.6 h, the solution was diluted with EtOAc and partially concentrated in vacuo. Additional EtOAc was added along with KHSO4 (2%, aq) and water. The layers were separated and the aqueous layer was extracted with EtOAc (3×). The combined organic layers were washed with brine, dried over Na2SO4 and concentrated in vacuo. The crude residue was purified via silica gel chromatography (EtOAc-Heptane, 0-100%), affording the title compound (165 mg, 88%) as a white solid. Rt=0.83 min, m/z=696.3 (M+1) Method 2m_acidic.

Provenance & Evidence