Process for the isolation of diaryl guanidines

Details Process for the isolation of diaryl guanidines Process for the isolation of diaryl guanidines

1986-12-16

1988-04-19

Moyer, Donald B.

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

Organic compounds

Amino nitrogen containing

C07C12912

Patent

active

047391170

ABSTRACT:
Diaryl guanidines can be obtained in a high degree of purity and in high yields from the crude melt obtained from the reaction of arylamines and cyanogen chloride by dissolving the hot melt in water, extracting this solution with a mixture of at least one water insoluble, apolar hydrocarbon and at least one polar organic compound and precipitating the diaryl guanidine from the purified, aqueous solution by the addition of alkali metal hydroxide.

REFERENCES:
patent: 1884509 (1932-10-01), Bailey
patent: 1897220 (1933-02-01), Ter Horst

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