反应详情

A solution of 3,5-bis(trifluoromethyl)benzoyl chloride (2.3 mL, 13 mmol) in dichloromethane (50 mL) was added with stirring to a mixture of 1-phenyl-1,3,8-triaza-spiro[4.5]decan-4-one (2.9 g, 13 mmol) and triethylamine (3.5 mL, 25 mmol) in dichloromethane (250 mL) at room temperature. Stirring was continued for 2 h. Water (150 mL) was added, the phases were separated and the water phase was extracted twice with dichloromethane (100 mL). Organic phases were pooled, washed with brine (200 mL), dried with Na2SO4 and the solvent was evaporated. Chromatography on silica gel (ethylacetate/n-hexane 1:1) yielded the desired product (5.3 g, 89%) m.p. 251° C. and MS: m/e=472.1 (M+H+).

1. customthe phases were separated
2. extractionthe water phase was extracted twice with dichloromethane (100 mL)
3. washwashed with brine (200 mL)
4. dry with materialdried with Na2SO4
5. customthe solvent was evaporated