C(N(CC)CC)C.Cl[C:9]1[C:14]([N+:15]([O-:17])=[O:16])=[CH:13][CH:12]=[C:11]([Cl:18])[N:10]=1.[Cl:19][C:20]1[CH:21]=[C:22]([NH2:28])[C:23]([O:26][CH3:27])=[N:24][CH:25]=1>C(#N)C>[Cl:18][C:11]1[N:10]=[C:9]([NH:28][C:22]2[C:23]([O:26][CH3:27])=[N:24][CH:25]=[C:20]([Cl:19])[CH:21]=2)[C:14]([N+:15]([O-:17])=[O:16])=[CH:13][CH:12]=1Triethylamine (2.7 mL) and a catalytic amount of 4-diaminopyrimidine were added to a solution of 2,6-dichloro-3-nitropyridine (639 mg, 3.31 mmol) and 5-chloro-2-methoxy pyridin-3-amine (Preparation 23, 501 mg, 3.16 mmol) in acetonitrile (20 mL) and the resulting mixture was stirred overnight at 90° C. Solvent was then removed under reduced pressure until a solid precipitated. The solid was filtered, washed with acetonitrile and dried. The solid was then treated with dichloromethane, filtered, washed with more dichloromethane and the combined filtrate and washings were concentrated to dryness under reduced pressure to yield the title compound (390 mg 30%) as an orange solid.
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