Azobisisobutyronitrile → 4-(Bromomethyl)-2-chloro-1-nitrobenzene
反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH3:11])[CH:5]=[CH:6][C:7]=1[N+:8]([O-:10])=[O:9].C1C(=O)N([Br:19])C(=O)C1.N(C(C)(C)C#N)=NC(C)(C)C#N>FC(F)(F)C1C=CC=CC=1>[Br:19][CH2:11][C:4]1[CH:5]=[CH:6][C:7]([N+:8]([O-:10])=[O:9])=[C:2]([Cl:1])[CH:3]=1参加物
5
実験手順
A solution of 3-chloro-4-nitrotoluene (2.0 g, 12 mmol), NBS (2.62 g, 14.6 mmol) and 2,2′-azo-bis-isobutyronitrile (0.195 g, 1.16 mmol) in α,α,α-trifluorotoluene (200 mL) was heated at 80° C. under an atmosphere of nitrogen for 3 h. Solvent was removed in vacuo and the residue was partitioned between EtOAc and water and separated. The aqueous layer was extracted with EtOAc (3×) and the combined organic fractions were washed with brine, dried over sodium sulfate, filtered, and concentrated. The crude product was taken to the next step without purification.