4-Methyl-3-nitrobenzoyl chloride → 6-(4-Methyl-3-nitrophenyl)-3-(3,4,5-trimethoxyphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole

関与物質

反応手順

A mixture of 4-amino-3-mercapto-5-(3,4,5-trimethoxyphenyl)-4H-1,2,4-triazole (220 mg, 0.78 mmol) and 4-methyl-3-nitrobenzoyl chloride (156 mg, 0.78 mmol) in phosphoryl chloride (2 mL) was refluxed for 3 h. The solvent was evaporated and the residue was dissolved in dichloromethane (20 mL). It was neutralized by aqueous sodium carbonate. The organic layer was dried over sodium sulfate, and concentrated to give 293 mg (85%) of the title compound as solid. 1H NMR (CDCl3): 8.59 (d, J=2.1 Hz, 1H), 8.05-8.01 (dd, J=7.8, 1.8 Hz, 1H), 7.73 (s, 1H), 7.62 (d, J=8.1 Hz, 1H), 4.02 (s, 6H), 3.95 (s, 3H), 2.75 (s, 3H).

情報源と証拠