Cl.Cl.[NH2:3][C:4]1[CH:12]=[CH:11][C:7]2[NH:8][N:9]=[N:10][C:6]=2[CH:5]=1.CC(N(C)C)=O.C(N(CC)CC)C.[C:26](Cl)(=[O:34])[O:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>N1C=CC=CC=1>[O:27]([C:26]([NH:3][C:4]1[CH:12]=[CH:11][C:7]2[NH:8][N:9]=[N:10][C:6]=2[CH:5]=1)=[O:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1To 62.1 g of 5-aminobenzotriazole dihydrochloride was added 500 ml of dimethylacetamide, and 83,7 ml of triethylamine was added dropwise thereto while being cooled in an ice bath. To the mixture was further added dropwise 21.0 ml of pyridine, and 42.3 g of phenyl chlorocarbonate was then added dropwise thereto while maintaining the system at 5° C. or lower, followed by stirring at room temperature for 2 hours. After the reaction, the reaction mixture was poured into 2 (of ice-water for crystallization, followed by filtration to obtain 60.8 g of 5-phenoxycarbonylaminobenzotriazole.
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