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US 4,394,521 AGranted
Process for the production of the Schiff's bases of 2,6-dichloro-5-hydroxy-aniline
AssigneeLonza-Werke G.m.b.H.
InventorReinhard Sappelt
Life of this patent
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Abstract
Process for the production of 2,6-dichloro-5-hydroxy-anils having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is an alkyl radical having 1 to 4 carbon atoms, by the conversion of 2,4-dichloro-3-aminophenol with a ketone. The reaction is conducted at a temperature of 0.degree. to 50.degree. C.
Claims25
Process for the production of 2,6-dichloro-5-hydroxy-anils having the formula:
- ##STR4## wherein R.sup.1 and R.sup.2 are the same or different and each is an alkyl radical having 1 to 4 C atoms, comprising reacting 2,4-dichloro-3-aminophenol with a ketone having the formula:
- R.sup.1 --CO--R.sup.2
- wherein R.sup.1 and R.sup.2 have the same meaning as above.
Composition comprising a mixture of 2,4-dichloro-3-aminophenol and a ketone having the formula:
- R.sup.1 --CO--R.sup.2
- wherein R.sup.1 and R.sup.2 are the same or different and each is an alkyl radical having 1 to 4 C atoms.
Dependencies are inferred from the claim text.