Supported catalyst for the preparation of monocarb

专利名称：Supported catalyst for the preparation of

monocarboxylic anhydrides

发明人：Gerhard Luft,Peter Trabold申请号：US07/319138申请日：19890303公开号：US04965234A公开日：19901023

摘要：In a supported catalyst for the preparation of monocarboxylic anhydrides bycarbonylation of the appropriate esters or ethers, where, in the supported catalyst, anorganosilicon compound is bonded, as a polyfunctional coupling agent, on the one handto a support material and on the other hand to a noble-metal compound from group VIIIof the Periodic Table of the Elements, the coupling agent is a chelate-forming

organosilicon compound of the general formula ##STR1## where X=Cl, Br or - -OR.sup.2 ;

Y=--NR.sub.2.sup.4, a nitrogen-containing aryl radical, --PR.sub.2.sup.4, AsR.sub.2.sup.4,--SR.sup.4 or --SH;< P>

Z=zero, arylene or phenylene (optionally ortho-, meta- or para-substituted),

R.sup.1 =C.sub.1 to C.sub.5 -alkyl;

R.sup.2 =C.sub.1 to C.sub.5 -alkyl or --C.sub.6 H.sub.5 ;

R.sup.3 =--H or C.sub.1 to C.sub.3 -alkyl;

< P>R.sup.4 =C.sub.1 to C.sub.6 -alkyl, C.sub.5 or C.sub.6 -cycloalkyl or --C.sub.6H.sub.5 or --CH.sub.2 C.sub.6 H.sub.5, which are optionally substituted by halogen,

methoxy, ethoxy or C.sub.1 to C.sub.3 -alkyl groups;

n=0 or 1 or 2;

m=2 to 6, preferably 2 to 4.

申请人：HOECHST AKTIENGESELLSCHAFT

代理机构：Connolly and Hutz

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