Avl Medical Instruments Ag

Suddeutsche Zucker-aktiengesellschaft

Suddeutsche Zucker-aktiengsellschaft

Jorg Daub

Otto S Wolfbeis

Knut M Rapp

Marco J Leiner

Tobias Werner

Christian Huber

Andrei Boila-Gockel

Rainer Wild

Petra Seitz

Stefan Heinl

Matthias Kollmannsberger

Thomas Gareis

Josef Salbeck

The invention relates to a compound having the general Formula I in which one of the groups R.sub.1,R.sub.2,R.sub.3,R.sub.4,R.sub.5,R.sub.6 and R.sub.7 represents an ionophoric moiety and the remaining groups each independently are hydrogen, a lipophilic or hydrophilic group or a reactive group for coupling to a polymer or a biomolecule, or R.sub.2 forms an aromatic ring system together with R.sub.3 and R.sub.5 forms an aromatic ring system together with R.sub.6. the compound of the invention is useful as a luminescence indicator for cations.

Luminescence indicator including ionophoric moiety

The invention relates to a compound having the general Formula I ##STR1## in which one of the groups R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 represents an ionophoric moiety and the remaining groups each independently are hydrogen, a lipophilic or hydrophilic group or a reactive group for coupling to a polymer or a biomolecule, or R.sub.2 forms an aromatic ring system together with R.sub.3 and R.sub.5 forms an aromatic ring system together with R.sub.6. The compound of the invention is useful as a luminescence indicator for alkali ions.

Luminescence indicator

A cycloadduct of the formula ##STR1## is prepared by reacting 2,2'-(2,5-furandiyldimethylidine)bis-propanedinitrile with 8-methoxypheptafulvene to form a tetrahydroazulene intermediate and then heating a solution of the tetrahydroazulene intermediate in a boiling solvent to drive off methanol.

Dicyanoazulenyl and dicyanovinyl substituted furan

The present invention refers to dicyanovinylsubstituted furan derivatives, processes for their production and their application. The new furan derivatives are represented by the general formula ##STR1## wherein x.sup.1 and x.sup.2 are equal or different and stand for H, alkyl, alkenyl, aryl, halogen, NO.sub.2 or CN. In the general formula I, n may be 0 or 1. In case of n=0, A means e.g. --CH.sub.2 OR.sup.1 (with e.g. R.sup.1 .dbd.H, alkyl or aryl). The compounds according to this invention can be used directly or in the form of their cycloadducts in several applications of electro-optical fields, e.g. for the manufacture of optical data recording systems or organic (electron) conducting materials or electron-transfer catalysts.

Dicyanovinylsubstituted furan derivatives

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Wuppertal, Germany

Jorg Daub