[C:1]([C:9]1[CH:13]=[CH:12][S:11][C:10]=1[C:14]([OH:16])=O)(=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:17][NH:18][NH2:19]>C(O)C>[CH3:17][N:18]1[C:14](=[O:16])[C:10]2[S:11][CH:12]=[CH:13][C:9]=2[C:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[N:19]1A solution of 31.2 g (0.134 mol) of 3-benzoyl-2-thiophenecarboxylic acid in 400 mL of ethanol was treated with 9.3 (0.2 mol) of methylhydrazine at room temperature for 18 hours, refluxed 3 hours, cooled and 30.7 g of the product filtered off, mp 174-175.
Wird geladen…