Butyl iodide → 4-(3-Butyl-1-(3-(trifluoromethyl)phenyl)-2,5-dioxo-1,2,3,4,5,6,7,8-octahydroquinazolin-4-yl)benzonitrile

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Reaction Steps

Lithium diisopropylamide (2.0 M in tetrahydrofuran, 135 μL, 0.27 mmol) is added at 0° C. to a solution of 4-(2,5-dioxo-1-(3-(trifluoromethyl)phenyl)-1,2,3,4,5,6,7,8-octahydroquinazolin-4-yl)-benzonitrile (example 1, 100 mg, 0.243 mmol) in N,N-dimethylformamide (5 mL). n-Butyl iodide (30 μL, 0.264 mmol) is added, and the mixture is warmed to room temperature and stirred for 2 h. Another portion of n-Butyl iodide (15 μL, 0.132 mmol) is added and the mixture is stirred over night and purified by reversed phase HPLC (Waters Xbridge™-C18, gradient of acetonitrile in water, 0.1% TFA). Yield: 28 mg; ESI mass spectrum [M+H]+=468; Retention time HPLC: 1.47 min (V001—006).

Provenance & Evidence