Process for the purification of nicotinic acid amide ii

Details Process for the purification of nicotinic acid amide ii Process for the purification of nicotinic acid amide ii

C - Chemistry, Metallurgy

07

D

260/297.6

C07D 213/82 (2006.01) C07D 213/81 (2006.01)

Patent

CA 1136147

ABSTRACT OF THE DISCLOSURE Crude nicotinamide is purified by a recrystallization and thereby is particularly freed from nicotinic acid and salts of nicotinic acid. As solvent there is used 2-methylpropanol-1 containing water. The warm solution after dissolving the crude nicotinamide is treated with ion exchangers. In this process an outstandingly pure nicotinamide is obtained with favorable yield with only a single recrystallization.

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