反应详情

A solution of 5-[(4-nitrophenyl)oxy]-1,3-dihydro-2-benzofuran (Intermediate 74, 190 mg, 0.739 mmol), hydrazine hydrate (0.046 ml, 1.477 mmol) and Pd/C (157 mg, 0.148 mmol) in ethanol (6 ml) was stirred under argon at 90° C. After 4.5 hours 0.2 equivalents of Pd/C and 2 equivalents of hydrazine hydrate were added. After 1 more hour, the reaction mixture was cooled to room temperature and then filtered over celite and washed with methanol. The organic phase was concentrated and the residue was purified by SCX to afford the title compound (152 mg).

1. filtrationfiltered over celite
2. washwashed with methanol
3. concentrationThe organic phase was concentrated
4. customthe residue was purified by SCX