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US 3,944,596 AGranted
Process for the preparation of 3-mono-alkyl and 3,6-dialkyl-resorcylic esters
AssigneeP.F.W. Beheer B.V.
InventorAmnon Mordechai Cohen
Life of this patent
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Abstract
Mono- and dialkyl-resorcylic esters of the general formula ##SPC1## Wherein R.sup.1 is hydrogen or an alkyl radical containing up to three carbon atoms, R.sup.2 represents an alkyl radical (preferably a lower alkyl radical such as methyl or ethyl) and R.sup.3 represents methyl or ethyl, are prepared by reacting the corresponding dihydroresorcylic esters having the general formula ##SPC2## With organic N-haloamides. Halocaprolactams, and especially N-chlorocaprolactam, are preferred reactants.
Claims15
A process for the preparation of mono- and di-alkylresorcylic esters of the general formula ##SPC3##
- wherein R.sup.1 is hydrogen or an alkyl radical containing up to three carbon atoms, R.sup.2 represents an alkyl radical having up to three carbon atoms, and R.sup.3 represents methyl or ethyl, which consists essentially of reacting the corresponding dihydroresorcylic esters represented by the general formula ##SPC4##
- with an N-bromo- or N-chloro- derivative of an amide selected from the class consisting of acetamide, aromatic amides, caprolactam, succinimide, phthalimide, saccharin, and N,N-dihalohydantoins, in an inert solvent at a temperature between room temperature and the reflux temperature of the solvent employed.
Dependencies are inferred from the claim text.