1-Fluoro-4-(isocyanatomethyl)benzene → 1-(4-Fluorobenzyl)-3-{6-[4-(2-trifluoromethylbenzoyl)piperazin-1-YL]-pyridazin-3-YL}urea

Participants

Reaction Steps

Following the procedure of Example 5, making variations only as required to use 4-fluorobenzylisocyanate in place of (2-isocyanatocyclopropyl)benzene to react with [4-(6-aminopyridazin-3-yl)piperazin-1-yl](2-trifluoromethylphenyl)-methanone, the title compound was obtained as a white solid (56% yield). 1H NMR (500 MHz, CDCl3) δ 8.13, 7.78, 7.66, 7.60, 7.33, 7.21, 7.09, 6.83, 4.50, 3.91-4.00, 3.73-3.80, 3.34-3.48, 3.05-3.22. MS (ES+) m/z 503 (M+1).

Provenance & Evidence