反应详情

A mixture of 2-methylene-4-morpholin-4-yl-4-oxo-butyric acid (2 g, 10.03 mmol), in DMF (5 mL), 2-trifluoromethylbenzyl mercaptan (1.93 g, 10.03 mmol) and DMAP (122 mg, 1.0 mmol) was stirred at ambient temperature for 16 hours. Methanol (200 mL) and a saturated aqueous solution of Oxone® (20 g, 32.5 mmol) were added with continued stirring for 2 hours. Methanol was removed under vacuum and the aqueous residue was diluted with 200 mL of water. The crystallized product was filtered, washed with water, and dried under vacuum to yield 4-morpholin-4-yl-4-oxo-2-(2-trifluoromethyl-benzylsulfonylmethyl)-butyric acid (0.95 g) as a white solid.

1. customMethanol was removed under vacuum
2. additionthe aqueous residue was diluted with 200 mL of water
3. filtrationThe crystallized product was filtered
4. washwashed with water
5. customdried under vacuum