Process for the purification of nicotinic acid amide I

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

1981-07-29

1984-05-08

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546316, C07D21172, C07D21184, C07D21356

Patent

active

044476159

ABSTRACT:
Crude nicotinamide is purified by a recrystallization and in this way freed especially from nicotinic acid and salts of nicotinic acid. As solvent there is used a 2-methylpropanol-1 containing water. The recrystallization takes place at a pH between about 7 and 10.

REFERENCES:
patent: 2412749 (1946-12-01), Pike
patent: 2471518 (1949-05-01), Duesel
patent: 3678060 (1972-07-01), Finkelstein
patent: 4080336 (1978-03-01), Said
Krewson J. Amer. Chem. Soc. vol. 65, pp. 2256-2257 (1943).
Galat J. Amer. Chem. Soc. vol. 70, p. 3945 (1948).

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