反应详情

温度

70 °C

To a solution 2-(ethylsulfonyl)-6-methyl-4-morpholin-4-yl-benzamide (0.27 g, 0.88 mmol) in benzene-tetrahydrofuran (1:1) (10 ml) are added tetrabutylammonium hydrogensulfate (0.03 g, 0.09 mmol) and 15% sodium hydroxide solution (8 ml) at RT. 4-Chlorobenzyl bromide (0.083 g, 0.40 mmol) in tetrahydrofuran (1.5 ml) is added and the reaction mixture is slowly heated to 70° C. The reaction mixture is stirred at 70° C. for additional 25 min. After completion of the reaction (monitored by TLC), the organic layer is separated and the aqueous layer is extracted with ethyl acetate (2×20 ml). The organic layer is washed with water (20 ml), brine (20 ml), dried over anhydrous sodium sulfate and evaporated to get the crude product, which is purified by column chromatography (silica gel, 15% acetone/hexane) to yield N-[(4-chlorophenyl)-methyl]-2-(ethylsulfonyl)-6-methyl-4-morpholin-4-yl-benzamide (example 8) (0.20 g, 0.46 mmol, 74%). [M+H]+ 437.1.

1. customAfter completion of the reaction (monitored by TLC)
2. customthe organic layer is separated
3. extractionthe aqueous layer is extracted with ethyl acetate (2×20 ml)
4. washThe organic layer is washed with water (20 ml), brine (20 ml)
5. dry with materialdried over anhydrous sodium sulfate
6. customevaporated
7. customto get the crude product, which
8. customis purified by column chromatography (silica gel, 15% acetone/hexane)