Trifluoroacetic acid → HCID 178514771, compound
Reaction equation
C([O:5][C:6]([C:8]1[N:13]2[C:14](=[O:28])[CH:15]([NH:16][C:17](=[O:27])[CH2:18][S:19]([CH2:22][C:23]([F:26])([F:25])[F:24])(=[O:21])=[O:20])[C@H:12]2[S:11][CH2:10][C:9]=1[CH:29]([S:36][C:37]1[NH:41][N:40]=[N:39][N:38]=1)[CH2:30][CH2:31][S:32](=[O:35])(=[O:34])[NH2:33])=[O:7])(C)(C)C.FC(F)(F)C(O)=O>C(#N)C>[F:26][C:23]([F:24])([F:25])[CH2:22][S:19]([CH2:18][C:17]([NH:16][CH:15]1[C:14](=[O:28])[N:13]2[C:8]([C:6]([OH:7])=[O:5])=[C:9]([CH:29]([S:36][C:37]3[NH:41][N:40]=[N:39][N:38]=3)[CH2:30][CH2:31][S:32](=[O:34])(=[O:35])[NH2:33])[CH2:10][S:11][C@H:12]12)=[O:27])(=[O:21])=[O:20]Participants
4
Procedure
The ester is dissolved in acetonitrile and trifluoroacetic acid is added. The solution is stirred for three hours, then evaporated to dryness to give the title compound.