反应详情

温度

90 °C

A mixture of ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-iodopyrazolo[1,5-a]pyrimidin-5-yl)-1-(hydroxymethyl)cyclohexanecarboxylate (270 mg, 0.383 mmol), 1-phenyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (135 mg, 0.498 mmol), PdCl2(dppf)CH2Cl2 (31.3 mg, 0.038 mmol), and K3PO4 (244 mg, 1.15 mmol) in dioxane/H2O (3/0.3 mL) was degassed and then heated at 90° C. for 16 h. After cooling, the reaction mixture was diluted with EtOAc and washed with H2O and brine, dried over Na2SO4, and concentrated. The crude product was purified by a SiO2 column (0-40% EtOAc/Hexanes, Rf=0.55 in 50% EtOAc) to afford ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(hydroxymethyl)cyclohexanecarboxylate as a pale yellow solid (200 mg). HPLC-MS TR=3.06 min (UV 254 nm, 5 min method); mass calculated for formula C37H56N6O5Si2 720.4, observed LCMS m/z 721.3 (M+H).

1. customwas degassed
2. temperatureAfter cooling
3. additionthe reaction mixture was diluted with EtOAc
4. washwashed with H2O and brine
5. dry with materialdried over Na2SO4
6. concentrationconcentrated
7. customThe crude product was purified by a SiO2 column (0-40% EtOAc/Hexanes, Rf=0.55 in 50% EtOAc)