Preparation of indene derivatives

A process for preparing indene derivatives of the general formula I where R1 is a C1-C10-alkyl radical, a phenyl radical or a C1-C4-alkyl-substituted phenyl radical and A is a bridge which, together with the adjacent carbons, forms a six-membered aromatic or a five- or six-membered heteroaromatic or...

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Bibliographische Detailangaben
Hauptverfasser:	TRUEBENBACH, PETER, WAGNER, JUERGEN MATTHAEUS, DIETRICH, ULF, MUELLER, HANS-JOACHIM, RIEGER, BERNHARD
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A process for preparing indene derivatives of the general formula I where R1 is a C1-C10-alkyl radical, a phenyl radical or a C1-C4-alkyl-substituted phenyl radical and A is a bridge which, together with the adjacent carbons, forms a six-membered aromatic or a five- or six-membered heteroaromatic or carbocyclic ring onto which a further aromatic ring may be fused, comprises reacting II with III (X=chlorine, bromine, iodine) in the presence of a Friedel-Crafts catalyst to give IV which is then dehydrogenated to I.