Water → 4-(2,5-Dioxo-7-(thiophen-2-yl)-1-(3-(trifluoromethyl)phenyl)-1,2,3,4,5,6,7,8-octahydroquinazolin-4-yl)benzonitrile

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Reaction Steps

Sodium tert-butoxide (108 mg, 1.13 mmol) is added to a solution of 1-((4-cyanophenyl)-(2-ethoxy-6-oxo-4-(thiophen-2-yl)cyclohex-1-enyl)methyl)-3-(3-(trifluoromethyl)phenyl)-urea (intermediate 21, 507 mg, 0.94 mmol) in acetonitrile (6 mL) and the mixture is stirred at room temperature over night. Water is added and the mixture is extracted with ethyl acetate. The organic layer is dried over Na2SO4 and concentrated under reduced pressure. The residue is purified two times by reversed phase HPLC (first purification: Waters Xbridge™-C18, gradient of acetonitrile in water, 0.1% TFA; second purification: Waters Xbridge™-C18, gradient of acetonitrile in water, 0.1% NH3). Yield: 31 mg; ESI mass spectrum [M+H]+=494, Retention time HPLC: 1.18 min, 1.20 min (1:1 mixture of diastereomers) (V011_S01).

Provenance & Evidence