3-cyclopropyl-1H-pyrazol-5-amine → N-(5-cyclopropyl-1H-pyrazol-3-yl)-5-nitro-2-phenyl-pyrimidin-4-amine

Participants

Reaction Conditions

Reaction Steps

To a suspension of 4-chloro-5-nitro-2-phenylpyrimidine (800 mg, 3.40 mmol, 1.0 eq) in CHCl3 (20 mL) was added 5-cyclopropyl-1H-pyrazol-3-amine (832 mg, 6.80 mmol, 2.0 eq). The reaction mixture was stirred for 6 hours at 23° C. The precipitate was filtered and recrystallized to give the desired product N-(5-cyclopropyl-1H-pyrazol-3-yl)-5-nitro-2-phenylpyrimidin-4-amine (Compound 6) (500 mg, 45.7%). LC-MS (m/z): 323.0 [M+H]+. 1H-NMR (300 MHz, DMSO-d6): δ 0.73-0.78 (m, 2H), 0.96-1.01 (m, 2H), 1.96-2.01 (m, 1H), 6.53 (s, 1H), 7.55-7.63 (m, 3H), 8.35-8.38 (m, 2H), 9.33 (s, 1H), 10.26 (s, 1H), 12.50 (s, 1H).

Provenance & Evidence