Triethylamine → 4-[[[(1,1-Dimethylethyl)dimethylsilyl]oxy]methyl]thiazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 1,3-thiazol-4-ylmethanol (311.4 mg, 2.7 mmol) in CH2Cl2 (15 mL) was added Et3N (1.9 mL, 13.6 mmol). The solution was cooled to −78° C. and TBSOTf (776 μL, 3.38 mmol) was added. The reaction was warmed to room temperature and stirred for 1 hour. Next, the reaction was diluted with EtOAc (75 mL) and washed with saturated NaHCO3, brine, 1N HCl, and brine (20 mL each). The organic layer was dried over Na2SO4, filtered, and concentrated. The residue was purified by flash chromatography on silica gel (0 to 15% EtOAc/hexanes) to afford 4-({[tert-butyl(dimethyl)silyl]oxy}methyl)-1,3-thiazole. Rf=0.28 (15% EtOAc/hexanes). LCMS=230.1 (M+1)+. 1H NMR (CDCl3, 600 MHz) δ 8.77 (d, J=2.0 Hz, 1H), 7.25 (m, 1H), 4.93 (d, J=1.1 Hz, 2H), 0.95 (s, 9H), 0.12 (s, 6H).

Herkunft & Nachweise