Undescanoic acids and esters thereof
AssigneeCiba-Geigy Corporation
InventorsDieter Reinehr, Paul Lienhard
Life of this patent
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Abstract
The invention relates to 11-aminoundecanoic acids and 11-aminoundeca-4,8-dienoic acids and the esters of these acids. They have the formula I ##STR1## wherein R.sup.1 and R.sup.3 are e.g. hydrogen and R.sup.2 and R.sup.4 are e.g. methyl and E is e.g. the radical --CH.sub.2 CH.sub.2 -- and R.sup.7 is hydrogen or an alkyl radical. The esters are suitable for the manufacture of salts of anionic dyes which are very readily soluble in organic solvents.
Claims8
A compound of the formula I ##STR25## wherein each of R.sup.1 and R.sup.3 independently is hydrogen or a straight chain or branched alkyl radical of 1 to 8 carbon atoms, and R.sup.3 is also a phenyl radical, R.sup.2 is a straight chain or branched alkyl radical of 1 to 8 carbon atoms and R.sup.4 is a straight chain or branched alkyl radical of 1 to 18 carbon atoms, or R.sup.1 and R.sup.2 R.sup.3 and R.sup.4 or both pairs together with the carbon atom to which they are individually attached each form a cycloaliphatic ring containing 4 to 8 carbon atoms, and wherein each E represents one of the radicals ##STR26## in which each of R.sup.5 and R.sup.6 independently is hydrogen or alkyl of 1 to 4 carbon atoms and R.sup.7 is hydrogen or a straight chain or branched alkyl radical containing altogether 1 to 18 carbon atoms.
Dependencies are inferred from the claim text.