Trifluoroacetic acid → HCID 136388334, compound
Reaction equation
C(OC(=O)[NH:7][CH2:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([NH:15][C:16]([NH2:21])=[N:17][N+:18]([O-:20])=[O:19])[CH:10]=1)(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl>[N+:18]([N:17]=[C:16]([NH2:21])[NH:15][C:11]1[CH:10]=[C:9]([CH2:8][NH2:7])[CH:14]=[CH:13][CH:12]=1)([O-:20])=[O:19]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of the compound (230 mg) obtained in Example 33, methylene chloride (3 ml) and trifluoroacetic acid (1.15 ml) was stirred at room temperature for 3 h. The reaction mixture was concentrated under reduced pressure and 25% aqueous ammonia solution was added to the resulting residue, and the reaction mixture was extracted with chloroform. The organic layer was washed with a saturated aqueous sodium chloride solution and dried with anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (eluent; methanol) to give 117 mg of the titled compound (yield, 75%).