Reaction of Conjugated Systems containing Nitrogen. II. : Reaction of Conjugated Schiff Base with Dimethyl Acetylenedicarboxylate

Reaction of glutathione with conjugated carbonyls.

1. GSH reacts with conjugated carbonyls according to the equation: GSH+R-CH=CH-COR in equilibrium R-CH(SG)-CH2-COR. The forward reaction follows second order, the reverse reaction first order kinetics. It is assumed that this reaction reflects best the ability of conjugated carbonyls to inactivate SH groups in biological systems. 2. The rate of forward reaction increases with pH approx. paralle...

Ion-induced tubular assembly of conjugated Schiff-base macrocycles.

Kinetics and mechanism of ligand exchange reaction of copper(II) complexes with tetradentate Schiff base ligands.

The kinetics of a ligand exchange in the CuL4/H2Ln system, where H2Ln is the N,N'-alkylen-bis(salicyldimine) tetradentate Schiff base ligand (n = 2 or 3, CH2 groups in the chain length of the amine backbone) was studied spectrophotometrically in DMF solvent with or without triethylamine (NEt3) and H2O at 25 ± 0.1 °C and an ionic strength of 0.01 M NaNO3. The reaction rate was found to be first-...

Synthesis of Enaminones and Their Reaction with Dimethyl Acetylene Dicarboxylate

In present paper a simple procedure for the synthesis of enaminones without catalyst from 1,3-diketones that reacted with primary or secondary amines in ethanol as solvent, as well as the reaction of enaminones with unsaturated esters such as dimethyl acetylene dicarboxylate are reported.

Platinum(II) Schiff base as versatile phosphorescent core component in conjugated oligo(phenylene-ethynylene)s.

Novel phosphorescent conjugated oligo(phenylene-ethynylene)s featuring a central tunable platinum(II) Schiff base signalling unit with promising photophysical properties have been investigated to pave their development towards polymeric congeners for sensing applications.