反应详情

A mixture of (1-methyl-1H-imidazol-5-yl)(4-nitrophenyl)methanone (1.30 g, 5.62 mmol, Intermediate 15: step b and tin(II)chloride dihydrate (6.54 g, 28.1 mmol) in EtOH (35 mL) was stirred at reflux for 1 hour, cooled to room temperature and evaporated in vacuo to remove most of the EtOH. The residue was poured into a 3 M aqueous NaOH/ice solution rinsing with EtOAc. The mixture was stirred at room temperature for 15 minutes then layers were separated. The aqueous layer was again extracted with EtOAc. The combined EtOAc extracts were washed with brine, dried (Na2SO4), filtered and evaporated in vacuo to provide the title compound as a yellow solid.

1. temperatureat reflux for 1 hour
2. customevaporated in vacuo
3. customto remove most of the EtOH
4. additionThe residue was poured into a 3 M aqueous NaOH/ice solution
5. washrinsing with EtOAc
6. customlayers were separated
7. extractionThe aqueous layer was again extracted with EtOAc
8. washThe combined EtOAc extracts were washed with brine
9. dry with materialdried (Na2SO4)
10. filtrationfiltered
11. customevaporated in vacuo