反应详情

Under nitrogen atmosphere, sodium hydride (10 mg of a 60% wt/wt suspension in mineral oil) is added to a solution of 2-[1-(4-chlorobenzyl)-1H-indol-3-yl]-2-oxo-N-(5-oxo-2,5-dihydro-3-furanyl)acetamide (100 mg) in dry DMF (2 ml). After 20′, methyl iodide (0.016 ml) is added. After 3 h the solvent is removed by roto-evaporation and the obtained residue is partitioned between water and ethyl acetate. The organic layer is dried over sodium sulfate and concentrated to dryness. The obtained residue is suspended in boiling MeOH/i-PrOH 1/1. After cooling to room temperature the insoluble material is collected by filtration and oven-dried at 60° C. for 3 h, to give 2-[1-(4-chlorobenzyl)-1H-indol-3-yl]-N-methyl-2-oxo-N-(5-oxo-2,5-dihydro 3-furanyl)acetamide (52 mg).

1. customAfter 3 h the solvent is removed by roto-evaporation
2. customthe obtained residue is partitioned between water and ethyl acetate
3. dry with materialThe organic layer is dried over sodium sulfate
4. concentrationconcentrated to dryness
5. filtrationis collected by filtration
6. customoven-dried at 60° C. for 3 h