Triphenylphosphine dibromide → 4-(3-Cyclohexylmethyl-1H-indol-5-yloxy)-3,5-bis-trifluoromethyl-benzyl bromide
Reaction equation
[CH:1]1([CH2:7][C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([O:17][C:18]4[C:25]([C:26]([F:29])([F:28])[F:27])=[CH:24][C:21]([CH2:22]O)=[CH:20][C:19]=4[C:30]([F:33])([F:32])[F:31])[CH:15]=3)[NH:10][CH:9]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[Br:34]P(Br)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>C(#N)C>[CH:1]1([CH2:7][C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([O:17][C:18]4[C:25]([C:26]([F:29])([F:28])[F:27])=[CH:24][C:21]([CH2:22][Br:34])=[CH:20][C:19]=4[C:30]([F:33])([F:32])[F:31])[CH:15]=3)[NH:10][CH:9]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Preparation is carried out in analogy to the procedure of Example VII from 2.0 g (4.18 mmol) of benzyl alcohol derivative from Example XXI and 2.82 g (6.69 mmol) of dibromotriphenylphosphorane in 40 ml of acetonitrile. After stirring for 3 hours at room temperature, 0.3 equivalent of dibromotriphenylphosphorane is again added. The mixture is additionally stirred for 5 hours at 70° C. and afterwards overnight at room temperature. The purification of the product is carried out on silica gel using toluene as eluent.