Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-08-28
1979-11-13
Douglas, Winston A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260563R, 260563C, 260563P, 2605705R, 2605708R, 2605709, 260575, 260583N, 260701, C07C 8526, C07C 8904
Patent
active
041743512
ABSTRACT:
Amines which are dissimilar in nature by virtue of possessing different substituents, different structures or position isomers may be selectively separated by treatment with a reactive carbonyl compound and an acid. The separation may be effected at reaction conditions which include a temperature in the range of from about ambient to about 150.degree. C. and a pressure in the range of from about atmospheric to about 100 atmospheres. An example of this separation is the treatment of a mixture of m-toluidine and p-toluidine with benzaldehyde and trifluoroacetic acid. The m-toluidine will form an imine while the p-toluidine will form an acid salt.
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Doll John
Douglas Winston A.
Hoatson Jr. James R.
Nelson Raymond H.
Page II William H.
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