Tetrabutylammonium Fluoride → (2-(5-chloro-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoro-pyrimidin-4-ylamino)-1-methylcyclohexane-1,2-diol

참여 물질

반응 단계

To a stirred solution of (1R,2R,6S)-2-[tert-butyl(dimethyl)silyl]oxy-6-[[2-methyl[5-chloro-1-(p-tolylsulfonyl)-pyrrolo[2,3-b]pyridin-3-yl]-5-fluoro-pyridin-4-yl]amino]cyclohexanol, 50f, (0.11 g; 0.16 mmol) in THF (2 mL) at room temperature, was added tetrabutylammonium fluoride (1.5 equiv) and the reaction mixture stirred for 1.5 h, at which point HPLC-analysis revealed no starting material but the de-tosylated product was observed with minor desilylation. An additional equivalent of TBAF was added and the reaction mixture was stirred at room temperature overnight. The reaction mixture was suspended in ethyl acetate (10 mL), washed with H2O (2×4 mL), aqueous saturated NH4Cl solution (2 mL) and brine (2 mL). The organic phase was dried (Na2SO4) and concentrated in vacuo to provide 139 mg of crude. The crude residue was purified by reverse phase HPLC (5-95% MeOH/water w/HCl buffer over 15 minutes). to afford 15 mg of desired product, 860. LCMS M+1=392.34

출처 및 근거