Manufacture of arylamines
AssigneeBASF SE
InventorsHelmut Hoch, Horst Scheuermann
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Abstract
Arylamines are manufactured by reacting alcohols with amines in the presence of phosphorus-III compounds. The arylamines I manufactured by the process of the invention are intermediates for the manufacture of crop protection agents, optical brighteners, especially amino-coumarin derivatives, and dyes, especially of the xanthene, pyronine, rhodamine, oxazine, azo, triphenylmethane and diphenylmethane series.
Claims12
A process for the manufacture of arylamines of the formula ##STR28## where R.sup.1 is ##STR29## or is an aliphatic, cycloaliphatic or araliphatic radical, R.sup.2 is an aromatic radical and, if R.sup.1 is ##STR30## may also be an aliphatic, cycloaliphatic or araliphatic radical, R.sup.3 and R.sup.4 may be identical or different and each is hydrogen, an aliphatic radical or alkoxy and R.sup.5 is hydrogen or, if R.sup.1 is an aliphatic, cycloaliphatic or araliphatic radical, may also be an aliphatic, cycloaliphatic or araliphatic radical, wherein amines of the formula ##STR31## where R.sup.2 and R.sup.5 have the above meanings, are reacted with alcohols of the formula
- R.sup.1 -- OH III
- where R.sup.1 has the above meanings, in the presence of a phosphorus-III compound of the formula ##STR32## where the individual R.sup.6 radicals may be identical or different and each is hydrogen or an aliphatic, araliphatic or aromatic radical, as the catalyst.
Dependencies are inferred from the claim text.