Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1979-01-31
1980-08-26
Siegel, A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C14302
Patent
active
042194989
ABSTRACT:
This disclosure relates to a process for preparing highly pure 2-acylamido-2-methylpropanesulfonic acid, which comprises the steps of adding acetic acid to a slurry containing crystals of 2-acrylamido-2-methylpropanesulfonic acid obtained by the reaction of acrylonitrile, isobutene and either conc. sulfuric acid, fuming sulfuric acid or sulfuric anhydride plus water in a solvent, then distilling the resulting mixture to replace the reaction solvent with acetic acid, adding water or hydrous acetic acid to the resulting mixture, heating the mixture to dissolve said crystals, and subjecting the solution to recrystallization.
REFERENCES:
Vogel, "Practical Org. Chem.," 3rd Ed. (1962), pp. 122-125.
Doi Shun'ichi
Kamogawa Masatake
Mitsubishi Rayon Co. Ltd.
Nitto Chemical Industry Co. Ltd.
Siegel A.
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