Cl[CH2:2][C:3]([C:5]1[CH:14]=[CH:13][C:8]2[NH:9][C:10](=[O:12])[NH:11][C:7]=2[CH:6]=1)=[O:4].[N-:15]=[N+:16]=[N-:17].[Na+]>>[N:15]([CH2:2][C:3]([C:5]1[CH:14]=[CH:13][C:8]2[NH:9][C:10](=[O:12])[NH:11][C:7]=2[CH:6]=1)=[O:4])=[N+:16]=[N-:17]Treatment of give 5-(2-chloroethanoyl)-1,3-dihydrobenzimidazol-2-one with sodium azide, following the procedure described in Example 6. Step 4, gave 6-(2-azidoethanoyl)-1,3-dihydrobenzimidazol-2-one (5.75 g, 93%):
Wird geladen…