Triethylamine → 4-(3-bromo-phenyl)-7,8-dimethoxy-4H-1,3,4-triaza-phenalene

反応式

[CH3:1][O:2][C:3]1[C:14]([O:15][CH3:16])=[CH:13][C:12]2=[C:17]3[C:4]=1[CH2:5][CH:6](O)[N:7]([C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([Br:24])[CH:19]=1)[C:8]3=[N:9][CH:10]=[N:11]2.C(N(CC)CC)C.CS(Cl)(=O)=O>ClCCl>[Br:24][C:20]1[CH:19]=[C:18]([N:7]2[CH:6]=[CH:5][C:4]3[C:17]4[C:8]2=[N:9][CH:10]=[N:11][C:12]=4[CH:13]=[C:14]([O:15][CH3:16])[C:3]=3[O:2][CH3:1])[CH:23]=[CH:22][CH:21]=1

参加物

実験手順

To a solution of 7,8-dimethoxy-4-(3-bromo-phenyl)-5,6-dihydro-4H-1,3,4-triaza-phenalen-5-ol (0.17 g, 0.42 mmol) (from Example 22, Step A, supra) and triethylamine (0.35 mL, 2.53 mmol) in dichloromethane (30 mL) at 0° C. was added methanesulfonyl chloride (0.13 mL, 1.68 mmol) (Aldrich). The reaction solution was stirred at room temperature for 2 hours. The solution was then concentrated, the residue was purified by chromatography using EtOAc/CH2Cl2/NEt3 (1:1:0.01) as eluent to give the desired 4-(3-bromo-phenyl)-7,8-dimethoxy-4H-1,3,4-triaza-phenalene as an off white solid. (Yield 81 mg, 50%).