Hydrochloric Acid → 3-{2-Chloro-4-fluoro-5-[2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-(methoxycarbonyl)methoxypyridine

Participants

Reaction Conditions

Reaction Steps

To a mixture of 1 ml of N,N-dimethylformamide and 26 mg of sodium hydride, a solution of 126 mg of ethyl 3-amino-4,4,4-trifluorocrotonate in 1 ml of N,N-dimethylformamide was added and the mixture was stirred at 0° C. Thereafter, to the reaction mixture was added a mixture of 266 mg of 4-chloro-2-fluoro-5-{2-(methoxycarbonyl)methoxy-3-pyridyloxy}phenyl isocyanate and 1 ml of N,N-dimethylformamide at the same temperature, and the mixture was stirred over night at room temperature. The reaction solution was poured into a mixture of hydrochloric acid and ice water, and to obtain 3-{2-chloro-4-fluoro-5-[2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-(methoxycarbonyl)methoxypyridine.

Provenance & Evidence