Preparation of N-hydroxy-N'-diazenium oxides
AssigneeBASF SE
InventorsKlemens Massonne, Martin Fischer
Life of this patent
Estimating the term…
Abstract
The preparation of N-hydroxy-N'-diazenium oxides of the general formula I ##STR1## where R is an aliphatic or cycloaliphatic radical, by reacting a hydroxylamine of the general formula II R--NH--OH II or its salt with nitrosyl chloride or nitrosylsulfuric acid in aqueous solution is described. The process products are intermediates for fine chemicals and are used in the form of their metal salts as wood preservatives.
Claims6
A process for preparing N-hydroxy-N'-diazenium oxides of the formula I ##STR4## where R is an C.sub.3 -C.sub.10 -alkyl or C.sub.5 -C.sub.10 -cycloalkyl radical, which comprises reacting a hydroxylamine of formula II
- R--NH--OH II
- or its salt with nitrosylsulfuric acid in aqueous solution.
Dependencies are inferred from the claim text.