Methanesulfonic Acid → Methanesulfonate

反応式

[NH2:1][C:2]([NH2:22])=[N:3][C:4](=[O:21])[C:5]1[CH:10]=[C:9]([S:11]([CH3:14])(=[O:13])=[O:12])[C:8]([CH:15]2[CH2:19][CH2:18][CH:17]=[CH:16]2)=[CH:7][C:6]=1[CH3:20].[CH3:23][S:24]([OH:27])(=[O:26])=[O:25]>CC(C)=O>[NH2:22][C:2]([NH2:1])=[N:3][C:4](=[O:21])[C:5]1[CH:10]=[C:9]([S:11]([CH3:14])(=[O:12])=[O:13])[C:8]([CH:15]2[CH2:19][CH2:18][CH:17]=[CH:16]2)=[CH:7][C:6]=1[CH3:20].[CH3:23][S:24]([O-:27])(=[O:26])=[O:25]

参加物

実験手順

700 mg of N-diaminomethylene-2-methyl-4-(1-cyclopenten-3-yl)-5-methylsulfonylbenzamide [which can be prepared according to Example 1; m.p. 212°-214°] are dissolved in 20 ml of acetone, and 6.1 ml of methanesulfonic acid are added, while stirring. Filtration and lyophilization give N-diaminomethylene-2-methyl-4-(1-cyclopenten-3-yl)-5-methylsulfonylbenzamide, methane-sulfonate, m.p. 202°-204°.