Page 167 - CW E-Magazine (28-1-2025)

Special Report

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

Processes and Products

Catalytic Processes

functionalised aromatic compounds.
These authors have reported catalytic
activity of TPP for the above reactions.
A wide range of organic solvents have
been used. Process safety included the
reaction heat and thermal decomposi-
tion. (Org. Proc. Res. Dev., 2024; DOI:
10.1021/acs.oprd.4c00307).

Pairing O reduction and
2
water oxidation for dual-
pathway H O production
2 2

Several ways of making H O , includ-
2
2
ing direct H + O reaction, are being
2
2
Enhancing aniline (A) were done. This looks promising. (Ind.
condensation Eng. Chem. Res., 2024; DOI: 10.1021/
acs.iecr.4c01707).
Y. Li et al have used alkali and rare
earth element modified USY zeolite Catalytic activity of
catalyst for the title reaction and have triphenylphosphine
given mechanistic insights and reported (TPP) for electrophilic
synergistic effects. Cerium was used aromatic bromination using
as the rare earth element and the cata- N-Bromosuccinimide (NBS)
lyst was fully characterised. The 0.25 and process safety evaluation
M NaOH-5% Ce-USY catalyst gave
about 50% conversion compared to the M. Hosoya et al have referred to the explored to avoid the alkyl anthraqui-
unmodified zeolite. Alkali creates addi- wide use of NBS for electrophilic aro- none based process. X. Sun et al have
tional micropores. DFT calculations matic bromination for making highly worked on sunlight and renewable elec-
tricity as energy inputs; photocatalysis
and electrocatalysis have great poten-
tial to make H O . This paper reviews
2
2
the advances in pairing two-electron
O reduction and two-electron H O
2
2
oxidation reactions for dual-pathway
H O synthesis. The latest photocata-
2
2
lysts, electrocatalysts, and photo-elec-
trocatalysts are discussed. Research
opportunities are outlined. (Angew.
Chem. Intl. Ed., 2024; DOI: 10.1002/
anie.202414417).
Chemical Weekly January 28, 2025 167

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