[C:1]1([N:7]2[C:11]([C:12]([OH:14])=O)=[CH:10][N:9]=[N:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C[N:16]1CCOCC1.ClC(OCC(C)C)=O.N.O1CCOCC1>COCCOC>[C:1]1([N:7]2[C:11]([C:12]([NH2:16])=[O:14])=[CH:10][N:9]=[N:8]2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1
To a solution of 1-phenyl-1H-1,2,3-triazole-5-carboxylic acid (1.0 g, 5.6 mmol) and 4-methylmorpholine (0.57 g, 5.6 mmol) in 1,2-dimethoxyethane (5 mL), isobutyl chloroformate (0.77, 5.6 mmol) was added to the mixture. After 30 minutes, ammonia in dioxane (16.8 mL, 8.4 mmol) was added to the reaction. Then it was stirred overnight. The solvent was removed and dissolved in 50 mL of ethyl acetate. The organic layer was washed with brine twice. The organic layer was dried with Na2SO4, filtered and concentrated and used without further purification. MS (m/z) 189 [M+H]+.
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