Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-10-29
1976-03-16
Sneed, Helen M. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 8900, C07C 8904
Patent
active
039446166
ABSTRACT:
A superior grade of d,d'-2,2'-(ethylenediimino)di-1-butanol dihydrochloride from the reaction of ethylene dichloride and an excess of d-2-amino-1-butanol is obtained by mixing finely divided sodium hydroxide with the reaction mixture, vacuum distilling off d-2-amino-1-butanol, adding a 2-4 carbon alkanol, preferably isopropanol, separating sodium chloride, adding water or an aqueous 2-4 carbon alkanol thereto to a water content of about 7-10% by weight, and an essentially stoichiometric amount of hydrogen chloride, to precipitate d,d'-2,2'-(ethylenediimino)di-1-butanol dihydrochloride, cooling the reaction mixture, and separating a pharmaceutical grade product.
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American Cyanamid Company
Sneed Helen M. S.
Walker Samuel Branch
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