反应详情

To a solution of 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]-pyrimidine (200 mg, 0.0007 mol) in ACN (2 mL, 0.04 mol) and (2E)-3-[5-(diethoxymethyl)-3-thienyl]acrylonitrile (160 mg, 0.00067 mol) (mixture of regioisomers) DBU (80 μL, 0.0005 mol) was added. The reaction was stirred overnight than water was added and the product was extracted with ethyl acetate. The combined extracts were washed with saturated sodium chloride, dried over magnesium sulfate, filtered and concentrated. The crude residue was purified by flash column chromatography on silica gel eluting (50% EtOAc/Hexane) to give 3-[5-(diethoxymethyl)-3-thienyl]-3-[4-(7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile (160 mg, 43%). 1H NMR (400 MHz, CDCl3): 8.92 (s, 1H), 8.41 (s, 1H), 8.29 (b, 1H), 7.45 (d, 1H), 7.41 (d, 1H), 7.15 (s, 1H), 7.05 (d, 1H), 6.82 (m, 1H), 5.74 (d, 2H), 3.74 (m, 2H), 3.71 (m, 8H), 3.59 (m, 1H), 1.32 (m, 4H), 0.95 (m, 2H), −0.08 (s, 9H); MS(ES): 553 (M+1).

1. additionwas added
2. extractionthe product was extracted with ethyl acetate
3. washThe combined extracts were washed with saturated sodium chloride
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customThe crude residue was purified by flash column chromatography on silica gel eluting (50% EtOAc/Hexane)