Page 171 - CW E-Magazine (10-9-2024)

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(GMA). Thus, GMA got grafted onto
PGA chains and the epoxy of grafting
GMA reacted with the end groups of
PGA. The wt% of BIPB and GMA were
all 1.0 wrt PGA. The title properties were
realised. (Ind. Eng. Chem. Res., 2024;
DOI: 10.1021/acs.iecr.4c00610).

Solvent-regulated tandem oxi-
dative degradation of polyethy-
lene (PE) to multi-functional
chemicals

Q. Zhang et al have come out with a new
way of valorising PE through functional
chemicals with a carbon yield of up to
about 95%. This process depends on us-
Diazoacetonitrile (DAAN) Preparation of non-linear struc- ing oxidation of xylene, in the presence
ture poly(glycolic acid) (PGA) of O , generating a radical to induce
D. Boskovic et al have reported a safe 2
and green synthesis of DAAN through with high toughness, excellent
continuous processing. DAAN is a rela- hydrolysis stability and foaming
tively stable diazo compound, which performance
has been overlooked. A microflow
process is reported in aqueous solutions S. Chen et al have modified PGA to rea-
and its extraction into CH Cl . This is lise broader application. Chain extending the oxidation of PE and high efficiency
2
2
a breakthrough process. (Chem, Ing. reaction was done in the presence of degradation is reported at 120°C using
Technik., 2024, 96, Issue 5, 652-657; bis(tert-butylperoxyisopropyl)benzene a non-noble metal catalyst. The oxi-
DOI: 10.1002/cite.202300187). (BIPB) and glycidyl methacrylate dation products show good adhesion
and film-forming property and contain
carbonyl and carboxylic groups. (ACS
Sus. Chem. Eng., 2024; DOI: 10.1021/
acssuschem.3c07057).
Continuous-flow synthesis of
Ibuprofen (IB)

Q. Li et al have reported the title process
using isobutyl benzene and a-chloro-
propionyl chloride. Four chemical
transformations are involved without
conducting solvent exchanges or inter-
mediate purifications. This is proof of
principle method with a global yield

Chemical Weekly September 10, 2024 171

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