反应详情

温度

90 °C

A mixture of 2-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-iodopyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate (3.06 g, 3.93 mmol), 1-phenyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.38 g, 5.11 mmol), PdCl2(dppf)CH2Cl2 (321 mg, 0.393 mmol), and K3PO4 (2.50 g, 11.8 mmol) in dioxane/H2O (40/4 mL) was degassed and then heated at 90° C. for 16 h. 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=0.6 in 50% EtOAc/Hexanes) to afford 2-methoxyethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-3-(1-phenyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-(2-methoxyethoxy)cyclohexanecarboxylate as a brown oil (2.28 g). HPLC-MS TR=3.25 min (UV 254 nm, 5 min method); mass calculated for formula C40H62N6O7Si2 794.4, observed LCMS m/z 795.3 (M+H).

1. customwas degassed
2. additionThe reaction mixture was diluted with EtOAc
3. washwashed with H2O and brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated
6. customThe crude product was purified by a SiO2 column (0-40% EtOAc/Hexanes, Rf=0.6 in 50% EtOAc/Hexanes)