반응 #72274
ord-58738b9a4a2c4cda99242e0c30a31016
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후처리
- 1온도cooled to room temperature
- 2여과filtered
- 3농축concentrated
- 4기타purified on silica gel (0-10% methanol/dichloromethane, 60 min gradient)
실험 절차
To a mixture containing 3-(3-(methylsulfonamido)pyridin-4-yl)-N-(2-phenylpropan-2-yl)benzamide (0.20 g, 0.50 mmol), potassium carbonate (0.30 g, 2.0 mmol) and DMF (1.6 mL) was added (2-bromoethoxy)(tert-butyl)dimethylsilane (0.10 mL, 0.50 mmol) in a steady stream via syringe. The mixture was stirred at 80° C. for 4 h, cooled to room temperature, filtered, concentrated and purified on silica gel (0-10% methanol/dichloromethane, 60 min gradient) to afford 3-(3-(N-(2-(tert-butyldimethylsilyloxy)ethyl)methylsulfonamido) pyridin-4-yl)-N-(2-phenylpropan-2-yl)benzamide as a brown oil. 1H NMR (500 MHz, DMSO-D6) δ ppm 8.75 (s, 1H), 8.64 (d, J=4.88 Hz, 1H), 8.35 (s, 1H), 7.96 (s, 1H), 7.91 (d, J=7.94 Hz, 1H), 7.77 (d, J=7.93 Hz, 1H), 7.52-7.60 (m, 2H), 7.40 (d, J=7.32 Hz, 2H), 7.28 (t, J=7.63 Hz, 2H), 7.17 (t, J=7.32 Hz, 1H), 3.42-3.50 (m, 1H), 3.25 (s, 3H), 3.03 (s, 1H), 1.64-1.71 (m, 6H), 0.71-0.78 (m, 9H), −0.12-−0.06 (m, 6H). LCMS: retention time: 2.497 min. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Waters-Sunfire, 5u, C18, 4.6×50 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 4 mL/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 3 min, a hold time of 1 min, and an analysis time of 4 min where solvent A was 10% CH3CN/90% H2O/10 mM TFA and solvent B was 10% H2O/90% CH3CN/10 mM TFA. MS data was determined using a Micromass Platform for LC in electrospray mode. m/z 568 (MH+).