Cl[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][N:3]=1.[CH3:11][C:12]1[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][C:13]=1[OH:19].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH3:11][C:12]1[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][C:13]=1[O:19][C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][N:3]=1In a microwave vial, 2-chloro-5-nitropyridine (80 mg, 0.505 mmol) was dissolved in 2 mL of dry dimethylformamide. 2,5-dimethylphenol (80 mg, 0.505 mmol, 1 equiv) and potassium carbonate (418 mg, 3.03 mmol, 6 equiv) were added. The reaction mixture was heated under microwave irradiation for 1 hour at 110° C. (Biotage Initiator). The reaction mixture was filtered. The filtrated solid was washed with dichloromethane (5 mL). The volatiles were evaporated. The residue was dissolved in dichloromethane (10 mL) and brine was added (10 mL). The organic layer was extracted 2 times with dichloromethane (2×15 mL) and 2 times with ethylacetate (2×15 mL). The organic phase was dried over sodium sulphate. The solvent was removed to afford the title compound (112 mg)
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