Trifluoroacetic acid → 2-[4-(2-Butyl-4-chloro-5-formyl-imidazol-1-yl-methyl)-phenyl]-2-cyclopentylacetic acid
Reaction equation
[CH2:1]([C:5]1[N:6]([CH2:13][C:14]2[CH:19]=[CH:18][C:17]([CH:20]([CH:28]3[CH2:32][CH2:31][CH2:30][CH2:29]3)[C:21]([O:23]C(C)(C)C)=[O:22])=[CH:16][CH:15]=2)[C:7]([CH:11]=[O:12])=[C:8]([Cl:10])[N:9]=1)[CH2:2][CH2:3][CH3:4].FC(F)(F)C(O)=O>ClCCl>[CH2:1]([C:5]1[N:6]([CH2:13][C:14]2[CH:15]=[CH:16][C:17]([CH:20]([CH:28]3[CH2:29][CH2:30][CH2:31][CH2:32]3)[C:21]([OH:23])=[O:22])=[CH:18][CH:19]=2)[C:7]([CH:11]=[O:12])=[C:8]([Cl:10])[N:9]=1)[CH2:2][CH2:3][CH3:4]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
2.3 g (5 mmol) of the compound of Example IV are stirred in 5 ml of dichloromethane and 5 ml of trifluoroacetic acid for 5 hours at 25° C. After concentration, the crude product is chromatographed over silica gel 60 using dichloromethane/methanol (100:5). Yield: 1.8 g (87.6% of theory)