反应详情

4-[tert-Butyl(dimethyl)silyl]oxyaniline (0.92 g, 3.48 mmol) and 4-iodo-1-tetrahydrofuran-3-yl-pyrazole (0.78 g, 3.48 mmol) dissolved in anhydrous tetrahydrofuran (20 mL) are stirred for one hour at ambient temperature in the presence of sodium tert-butylate (1.7 mL, 2M solution in THF) and chloro(2-di-tert-butylphosphino-2′,4′,6′-triisopropyl-1,1′-biphenyl)[2-(2-aminoethyl)phenyl]palladium(II) (84 mg, 0.122 mmol). The reaction mixture is filtered over Celite and then evaporated to dryness. The residue is crystallised from a mixture of heptane/ethyl acetate, filtered and washed with heptane and then purified by chromatography over silica gel using dichloromethane and methanol as eluants to yield the expected product.

1. filtrationThe reaction mixture is filtered over Celite
2. customevaporated to dryness
3. customThe residue is crystallised from a mixture of heptane/ethyl acetate
4. filtrationfiltered
5. washwashed with heptane
6. custompurified by chromatography over silica gel