Reaktion #602338

Reaktionsgleichung

2-(ethylsulfonyl)-6-methyl-4-morpholin-4-yl-benzamide

sodium hydroxide

4-Chlorobenzyl bromide

→

N-[(4-chlorophenyl)-methyl]-2-(ethylsulfonyl)-6-methyl-4-morpholin-4-yl-benzamide

Ausbeute 115.0%

Lösungsmittel

benzene tetrahydrofuran

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeAfter completion of the reaction (monitored by TLC)
2. 2
   Sonstigethe organic layer is separated
3. 3
   Extraktionthe aqueous layer is extracted with ethyl acetate (2×20 ml)
4. 4
   WaschenThe organic layer is washed with water (20 ml), brine (20 ml)
5. 5
   Trocknendried over anhydrous sodium sulfate
6. 6
   Sonstigeevaporated
7. 7
   Sonstigeto get the crude product, which
8. 8
   Sonstigeis purified by column chromatography (silica gel, 15% acetone/hexane)

Vorschrift

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.

Quelle