It has to some extent the character of a secondary amine; the hydrogen of the imino group can be replaced by potassium.
They are prepared by condensing thio-amides with a-haloid ketones or aldehydes, the thio-amide reacting as the tautomeric thio-imino acid.
Acid anhydrides replace the imino-hydrogen atom by acidyl radicals, and boiling with water converts them into phenols.
NH 2, which may be considered as derived from the acid-amides by replacement of oxygen by the divalent imino (= NH) group. They may be prepared by the action of ammonia or amines on imide chorides, or on thiamides (0.
Wallach, Ber., 1882, 15, p. 208); and by the action of ammonia or amines on imino-ethers (A.
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