[CH3:1][NH:2][C:3]([C:5]1[C:10]([NH2:11])=[N:9][CH:8]=[C:7]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([CH2:18]O)[CH:13]=2)[N:6]=1)=[O:4].C1(P([N:34]=[N+:35]=[N-:36])(C2C=CC=CC=2)=O)C=CC=CC=1.C1CCN2C(=NCCC2)CC1.O>C1COCC1>[CH3:1][NH:2][C:3]([C:5]1[C:10]([NH2:11])=[N:9][CH:8]=[C:7]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([CH2:18][N:34]=[N+:35]=[N-:36])[CH:13]=2)[N:6]=1)=[O:4]3-Amino-6-(3-hydroxymethyl-phenyl)-pyrazine-2-carboxylic acid methylamide (1.00 g, 3.87 mmol) was dissolved in THF (20 mL) followed by the addition of diphenylphosphoryl azide (0.63 mL, 5.42 mmol) and DBU (0.43 mL, 5.42 mmol). It was stirred at room temperature overnight. The reaction mixture was poured into water (100 mL), and extracted with ethyl acetate (2×50 mL) then dried over anhydrous sodium sulfate and filteration, concentration and purified by column chromatography (50% Ethylacetae/bexanes) to give 3-amino-6-(3-azidomethyl-phenyl)-pyrazine-2-carboxylic acid methylamide, 728 mg (66.4% yield): MS (EI) for C13H13N7O0: 284.12 (MH+).
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