101306-89-2Relevant academic research and scientific papers
New redox indicators
-
, (2008/06/13)
The invention provides new redox indicators and uses for these redox compounds (I): STR1 Wherein X is oxygen or sulphur, R1 is julolidine or tetrahydroquinoline, which can carry an alkyl radical on the nitrogen atom which, in turn, can be substituted by a sulphuric, phosphonic or carboxylic acid residues, or is (II); wherein R4 is hydroxyl or a mono- or dialkylated amino group, R5 and R6, which can be the same or different, are hydrogen, alkyl or alkoxy, R2 is hydrogen or alkyl, julolidine or tetrahydroquinoline, which can carry an alkyl on the nitrogen atom which alkyl can be substituted by sulphuric, phosphonic or carboxylic acids, or is III; wherein R5 and R6 are the same as in R1 and R'4 is hydroxyl, an amino or a mono-or dialkylated amino group, whereby the alkyl radicals can be substituted one or more times by hydroxyl, alkoxy, halogen, morpholine or a sulphuric, carboxylic or phosphonic acid residue, which acids can also be esterified, and R3 is the same as R2 or is an alkyl substituted by hydroxyl, alkoxy, dialkylamino or phenyl, or is cycloalkyl, phenyl or pyridyl; as well as the salts thereof.
Imidazole derivatives as redox indicators
-
, (2008/06/13)
The present invention provides imidazole derivatives of the general formula: STR1 wherein R, R1 and R2 are defined hereinbelow. The present invention is also concerned with processes for the preparation of these imidazole derivatives and with the use thereof as redox indicators.
