Perchloric Acid → HCID 20275539, compound
Reaction equation
[CH3:1][N:2]=[C:3](Cl)[C:4]1[CH:9]=[CH:8][C:7]([Cl:10])=[CH:6][CH:5]=1.ClS(O)(=O)=O.[CH3:17][N:18]1[CH:22]=[C:21]([CH3:23])[CH:20]=[C:19]1[CH2:24][C:25]([O:27][CH3:28])=[O:26].[Cl:29]([OH:33])(=[O:32])(=[O:31])=[O:30]>>[Cl:29]([OH:33])(=[O:32])(=[O:31])=[O:30].[Cl:10][C:7]1[CH:8]=[CH:9][C:4]([C:3](=[N:2][CH3:1])[C:22]2[N:18]([CH3:17])[C:19]([CH2:24][C:25]([O:27][CH3:28])=[O:26])=[CH:20][C:21]=2[CH3:23])=[CH:5][CH:6]=1Participants
5
Procedure
The title compound was prepared as in Example X from N-methyl 4-chlorobenzimidoyl chloride (6.07 g, 32.3 mmole), chlorosulfonic acid (0.46 g, 4.0 mmole), methyl 1,4-dimethyl-1H-pyrrole-2-acetate (6.64 g, 39.8 mmole), and 70% perchloric acid (5.5 g, 38.3 mmole) to yield 9.3 g (69%) of a bright yellow solid, m.p. 168°-171° C. (dec).