1H-Indazol-4-amine, 1-methyl- → N-(2,4-dichlorobenzyl)-N'-(1-methyl-1H-indazol-4-yl)urea

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Reaction Conditions

Reaction Steps

1-Methyl-1H-indazol-4-amine (310 mg, 2.1 mmol) and 2,4-dichlorobenzyl isocyanate (0.3 mL, 2.06 mmol) were combined in toluene (10 mL) and heated for 2 hours at 80° C. The mixture was then allowed to cool to ambient temperature, filtered, and the filter cake was allowed to air-dry to provide the title compound. The corresponding hydrochloride salt was prepared by treatment with methanolic HCl. 1H NMR (300 MHz, d6-DMSO) δ 9.22 (s, 1H), 8.21 (d, J=1.0 Hz, 1H), 7.62-7.67 (m, 2H), 7.43-7.46 (m, 2H), 7.21-7.27 (m, 2H), 7.12 (m, 1H), 4.40 (d, J=5.5 Hz, 2H), 3.99 (s, 3H); MS (ESI+) m/z 349/351 (M+H, 35Cl/37CI)+.

Provenance & Evidence