Carbon tetrabromide → HCID 67341717, compound

Reaction equation

[Cl:1][C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][CH:27]=1)[C:5]([NH:7][C:8]1[C:9]([N:15]2[CH2:20][CH2:19][CH:18]([CH2:21][CH2:22][CH2:23]O)[CH2:17][CH2:16]2)=[N:10][CH:11]=[C:12]([Cl:14])[CH:13]=1)=[O:6].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(Br)(Br)(Br)[Br:48]>C(Cl)Cl>[Br:48][CH2:23][CH2:22][CH2:21][CH:18]1[CH2:19][CH2:20][N:15]([C:9]2[C:8]([NH:7][C:5](=[O:6])[C:4]3[CH:25]=[CH:26][CH:27]=[C:2]([Cl:1])[CH:3]=3)=[CH:13][C:12]([Cl:14])=[CH:11][N:10]=2)[CH2:16][CH2:17]1

Participants

Procedure

A mixture of 0.080 g (0.20 mmol) of the above amide and 0.056 g (0.22 mmol) of triphenylphosphine in anhydrous methylene chloride (10 mL), under an atmosphere of nitrogen, is stirred at room temperature for 20 minutes. To this mixture is added 0.071 g (0.22 mmol) of carbon tetrabromide and the resulting mixture is stirred overnight at room temperature. The reaction mixture is concentrated under reduced pressure and the residue is purified by flash silica gel chromatography to give 0.037 g (40%) of N-[4-(3-bromo-propyl)-5′-chloro-3,4,5,6-tetrahydro-2H-[1,2′]bipyridinyl-3′-yl]-3-chloro-benzamide.