Potassium Cyanide → 4-(6-cyano-5-(2,3-difluorobenzylamino)-1,2,4-triazin-3-ylamino)-N,N-dimethylbenzamide

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Reaction Conditions

Reaction Steps

4-(6-Chloro-5-(2,3-difluorobenzylamino)-1,2,4-triazin-3-ylamino)-N,N-dimethylbenzamide (20 mg) was dissolved in 2 mL NMP. To it was added KCN (100 mg) and 18-crown-6 (20 mg). The mixture was stirred in a sealed tube at 130° C. for overnight. It was cooled to RT and subjected to reverse phase preparative HPLC to isolate the cyanation product, 4-(6-cyano-5-(2,3-difluorobenzylamino)-1,2,4-triazin-3-ylamino)-N,N-dimethylbenzamide. It was dissolved in 2 mL DMSO and 10 mL methanol. To it was added 100 mg KOH and then 1 mL H2O2 (50%). The mixture was stirred at RT for 1 h. It was treated with acetonitrile and TFA, concentrated and subjected to reverse phase preparative HPLC to isolate the title compound (3 mg). MS found for C20H19F2N7O2 as (M+H)+ 428.3. UV: λ=244, 278 nm. Proton NMR: (CD3OD) δ 7.53 (2H, d, J=8.8 Hz), 7.43 (2H, d, J=8.4 Hz), 7.20 (1H, m), 7.14-7.11 (2H, m), 4.84 (2H, s), 3.11 (3H, s), 3.04 (3H, s) ppm.

Provenance & Evidence