反应详情

A mixture of (6-aminopyridin-3-yl)methanol (1.76 g, 14.2 mmol), TBDMSCl (2.18 g, 14.5 mmol), and imidazole (2.90 g, 42.6 mmol) in 20 mL DMF was stirred at room temperature for 2 hr. H2O was added, extracted with 3×EtOAc. The combined organic layer was washed with 2×H2O, dried with Na2SO4, and concentrated to give an off-white solid (2.57 g, 76% yield). 1H NMR (400 MHz, CDCl3)) δ 8.01 (d, J=1.77 Hz, 1 H) 7.44 (dd, J=8.34, 2.27 Hz, 1 H) 6.50 (d, J=8.34 Hz, 1 H) 4.60 (s, 2 H) 4.38 (br. s., 2 H) 0.93 (s, 9H) 0.11 (s, 6 H); LCMS for C12H22N2OSi m/z 239.00 (M+H).

1. extractionextracted with 3×EtOAc
2. washThe combined organic layer was washed with 2×H2O
3. dry with materialdried with Na2SO4
4. concentrationconcentrated