Hydantoin → 4-(4,4-Dimethyl-2,5-dioxoimidazolidin-1-yl)-2-trifluoromethylbenzonitrile

Participants

Reaction Conditions

Reaction Steps

(Cogan, P. S.; Koch, T. H. Rational Design and Synthesis of Androgen Receptor-Targeted Nonsteroidal Anti-Androgen Ligands for the Tumor-Specific Delivery of a Doxorubicin-Formaldehyde Conjugate. J. Med. Chem. 2003, 46, 5258-5270) 4-Fluoro-2-(trifluoromethyl)benzonitrile (4.02 g, 21.3 mmol) was added to Hydantoin (13.6 g, 106.3 mmol) and Potassium Carbonate (4.40 g, 31.9 mmol) in 60 mL DMF and stirred at 45° C. under argon for 48 hours. Reaction mixture was then diluted in ethyl acetate and washed three times with water. Organic layer was dried over sodium sulfate, filtered and concentrated in vacuo. Column chromatography (eluent 30:1 DCM/Methanol) gave 1 as a white solid (4.62 g, 74%). 1H NMR (400 MHz, (CD3)2—CO) δ 1.54 (6H, s), 7.80 (1H, s), 8.13 (1H, dd, J=1.8 Hz, J=8.4 Hz), 8.20 (1H, d, J=8.4 Hz), 8.26 (1H, d, J=1.8 Hz)

Provenance & Evidence