反应详情

温度

150 °C

To a solution of 4-bromo-2-(methyloxy)aniline (400 mg, 1.979 mmol) in anh. NMP (4 mL), at r.t., under N2, were added pyrazole (269 mg, 2 eq), K2CO3 (819 mg, 3 eq), CuI (377 mg, 1 eq) and (1R,2R)-diaminomethylcyclohexane (281 mg, 1 eq). The reaction mixture was stirred at 150° C. for 3 hr. It was cooled down to r.t. and poured into EtOAc/sat.aq. NaCl. The phases were separated and the organic layer was washed with sat.aq. NH4Cl (20 mL) and sat.aq. NaCl (20 mL). The combined aqueous layers were extracted back with EtOAc (20 mL) and the combined organic extracts were dried over anh. Na2SO4. The solids were filtered and the solvent evaporated. The crude product was purified by flash chromatography (silica gel, cHex/EtOAc 7:3) to give the title compound as a brown oil (336 mg, 90%)

1. temperatureIt was cooled down to r.t.
2. customThe phases were separated
3. washthe organic layer was washed with sat.aq
4. extractionThe combined aqueous layers were extracted back with EtOAc (20 mL)
5. dry with materialthe combined organic extracts were dried over anh. Na2SO4
6. filtrationThe solids were filtered
7. customthe solvent evaporated
8. customThe crude product was purified by flash chromatography (silica gel, cHex/EtOAc 7:3)