反应详情

To a solution of toluene (1000 mL) containing a solution (1.6 M : 98.3 mL) of butyllithium in hexane was dropwise added a solution (250 mL) of 6-bromo-N,N-diisopropyl-2-naphthamide (50.0 g) in THF at −70° C. The mixture was stirred at the same temperature for 30 min., and a solution (200 mL) of 2-methyl-1-(1-trityl-1H-imidazol-4-yl)-1-propanone (47.5 g) in THF was added dropwise. The mixture was stirred for 20 min. Water was added and the organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with saturated brine and dried over magnesium sulfate. The solvent was evaporated and the residue was recrystallized from isopropyl ether to give the title compound (71.1 g) as a colorless powder.

1. stirringThe mixture was stirred for 20 min
2. customthe organic layer was separated
3. extractionthe aqueous layer was extracted with ethyl acetate
4. washThe combined organic layers were washed with saturated brine
5. dry with materialdried over magnesium sulfate
6. customThe solvent was evaporated
7. customthe residue was recrystallized from isopropyl ether