Page 165 - CW E-Magazine (12-3-2024)

Special Report

A rapid wrap-up of what’s new in Operations,

Processes and Products

Empowering strategies of electro
chemical N-N bond forming
reactions: Direct access to pre-
viously neglected 1,2,3-tria-
zole-1-oxides

K. Titenkova et al have reported a
novel green process for the selective
intra-molecular formation of N-N bonds
via the oxidation of readily available
oximinohydrazones. Thus, 1,2,3-tri-
azole-1-oxides were prepared. DFT
calculations were done. The above sub-
stances are thermally stable and highly
valuable for the further development of
functional organic materials. These also
have promising NO release properties.
Electrochemical processes which have multi-functional intrinsic (Green Chem., 2023; DOI: 10.1039/
D3GC0161C).
properties, and diverse catalytic appli-
Electrochemical reversible cations with corresponding outstand- CO fl ow electrolysis
reforming between C H NH and ing activities. Ultra-thin Pd-NiCOH 2
2
2
5
2
CH CN on hetero-structured nanosheets were used, which have C. Martens et al have reported this work
3
Pd-Ni(OH) nanosheets excellent activity and selectivity towards
2 reversible electrochemical reforming with respect to, e.g., getting CO via
W. Ao et al have worked on the ratio- of C H NH . Reversible reforming of reduction, and have discussed individual
5
2
2
nal design of electrocatalysts and have C H NH – CH CN was carried out. This components such as CO -reducing gas
2
3
2
5
2
discussed hetero-structured catalysts, should help in electrochemical synthesis diffusion electrodes (GDEs) to realise
of fi ne chemicals. (Angew. Chem. Intl. stable process. Identification of key
Ed.; DOI: 10.1002/anie.2023.07924). operational parameters that enhance
electrode effi ciency are discussed. It
Catalyst-free electroreductive seems GDEs are not the bottleneck to
carboxylic acid nitroarenes realise high current density. (Green Chem.
2023, DOI: 10.1039/D3GC02140H).
coupling
Q. Wang et al have referred to the Insights into hydrodynamic
increasing interest in electrochemical and operational conditions for
synthesis. A remarkable application is scalable H O electrosynthesis
2
2
that of the cross-coupling of redox- applications
active esters with nitroarenes utilising
sacrificial metal anodes. Thus, high R. DaSilva Souto et al have focused
value products can be made from readily on the development and application of
available chemicals and that too in an an electrochemical fl ow reactor (EFR)
economically viable way. 50 examples based on a gas diffusion electrode
(a) Ethylamine-Acetonitrile reversible
reformer powered by solar cell, (b) anode, are given. (Green Chem., 2023; DOI: (GDE) for in situ H O production via
2
2
and (c) cathode during electrolysis 10.1039/D3GC02402D). the O reduction reaction. Response
2
Chemical Weekly March 12, 2024 165
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