反应详情

温度

100 °C

To a solution of 3-methyl-4-[2-[N-(5-methyl-2-furylsulfonyl)amino]-4,5-dimethylphenoxymethyl]benzoic acid methyl ester prepared in reference example 3 (870 mg) in N,N-dimethylacetamide (2 ml), cesium carbonate (1.37 g) and isobutyl iodide (0.36 ml) were added and the mixture was stirred for 1 hour at 100° C. The reaction mixture was allowed to cool and poured into ethyl acetate-water (40 ml-40 ml). The organic layer was washed, dried and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (toluene-ethyl acetate) to give the title compound (855 mg) having the following physical data.

1. additionwere added
2. temperatureto cool
3. washThe organic layer was washed
4. customdried
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by column chromatography on silica gel (toluene-ethyl acetate)