The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1993
Filed:
Sep. 14, 1992
Marita Neuber, Frankfurt am Main, DE;
Ernst I Leupold, Neu-Ansbach, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
A process for the acylation of naphthyl ethers of the formula ##STR1## using acylating agents of the formula R.sup.2 --CO--X to give acylated naphthyl ethers of the formula ##STR2## in which R.sup.1 and R.sup.2 independently of one another are C.sub.1 -- to C.sub.10 -alkyl, C.sub.2 -- to C.sub.10 -alkenyl or C.sub.3 - to C.sub.8 -cycloalkyl and R.sup.2 is additionally C.sub.6 - to C.sub.10 -aryl and X is Cl, Br, --OCOR.sup.2, OH or C.sub.1 - to C.sub.3 -alkoxy, comprises carrying out the reaction presence of zeolite catalysts which have the formula Z.Al.sub.2 O.sub.3.x SiO.sub.2 (III) in the anhydrous and template-free form, in which Z is M.sup.I.sub.2 O, M.sup.II O and/or (M.sup.III).sub.2 O.sub.3, in which M.sup.I is an alkali metal atom, ammonium or a hydrogen atom, M.sup.II is an alkaline earth metal atom and M.sup.III is a rare earth metal of atomic number 57 to 71 in the periodic table of the elements, and x is a number from 4 to 4000, with the proviso that at least 50% of the negative lattice charges are compensated by protons, ammonium and/or the other metal ions mentioned under M.sup.II and M.sup.III, and the pores of which are formed from at least 10 tetrahedral atoms.