In a synthesis of divanillin experiment, divanillin was synthesised by the oxida
ID: 495817 • Letter: I
Question
In a synthesis of divanillin experiment, divanillin was synthesised by the oxidative dimerization of vanillin. The reaction was catalyzed by the enzyme horseradish peroxidase.Identify and discuss any sources of error. (Not human error.)
Thank you in advance. In a synthesis of divanillin experiment, divanillin was synthesised by the oxidative dimerization of vanillin. The reaction was catalyzed by the enzyme horseradish peroxidase.
Identify and discuss any sources of error. (Not human error.)
Thank you in advance.
Identify and discuss any sources of error. (Not human error.)
Thank you in advance.
Explanation / Answer
Synthesis and Characterization of N,N-bis(vanillidene)-
1,3-propanediamine (5).Model compound N, N-bis
(vanillidene)-1,3-propanediamine (5)(Figure 2)waspre-
pared to collect spectroscopic data that can be used as tools
in the characterization of polymeric Schibases of divanillin.
The 1HNMRof 5showed imine hydrogens as a singlet at
8.15 ppm, and the imine carbons were observed in 13CNMR
at 160.9 ppm. The C=N imine absorption in the IR spectrum
was observed as a strong peak at 1651 cm1
Divanillin was prepared following the literature procedure by horseradish peroxidase catalyzed oxidative dimerization of vanillin using 3% hydrogen pexoxide as the oxidant, as a gray powder in 95% yield, and was confirmed by comparison of the NMR spectra with published data.
condensation of renewable resources
based monomer divanillin with alkyl diamines gives low
molecular weight Schibase polymers in excellent yields.
The Schibase as well as phenolic binding sites in the
polymer are shown to complex with Cu(II), Fe(II), and
Co(II) metal ions. This class of vanillin-based polymers can
be used to chelate and remove metal ions from aqueous
solutions
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