The
bromination
of
α-oxo
ketene
dithioacetals
using
KBr/H2O2,
catalyzed
by
Curvularia
inaequalis
vanadium
chloroperoxidase
(CiVCPO),
has
been
successfully
demonstrated.
A
comparative
study
enzymatic
processes
"on
water"
versus
"in
water",
2
wt%
the
surfactant
TPGS-750-M
revealed
that
in-water
protocol
not
only
provides
higher
yields
but
also
accommodates
a
broader
substrate
scope.
This
method
in
an
aqueous
micellar
medium
enabled
preparation
brominated
fair
to
excellent
(23
examples).
In
system,
concentration
was
increased
up
50
mM,
and
amounts
brominating
agents
KBr
H2O2
were
reduced
approximately
2.0
equivalents
without
compromising
efficiency.
Notably,
this
process
allows
for
gram-scale
high
yields.
Key
advantages
include
its
benign
eco-friendly
nature,
use
water
as
green
solvent,
potential
large-scale
production
dithioacetals.
Catalysts,
Journal Year:
2025,
Volume and Issue:
15(3), P. 202 - 202
Published: Feb. 21, 2025
This
study
outlines
the
sustainable
synthesis
of
novel
hydroxytyrosol
(HT)
and
tyrosol
(T)
ester
derivatives
via
a
Pd-catalyzed
alkoxycarbonylation
aromatic
iodides.
The
high
sustainability
process
is
attributed
to
use
(1)
solid
carbon
monoxide
source,
Mo(CO)6,
in
place
dangerous
gaseous
CO;
(2)
biomass-derived
organic
solvent,
CPME
(cyclopentyl
methyl
ether);
(3)
naturally
occurring
hydroxylated
compounds,
such
as
HT
T,
which
could
be
derived
from
agricultural
waste
rather
than
produced
petroleum-based
sources.
method
enables
regioselective
preparation
various
T
esters
short
reaction
time
(4–8
h),
under
mild
temperatures
(80
°C),
with
moderate-to-excellent
yields
(62–93%).
Moreover,
vitro
biological
tests
have
demonstrated
that,
addition
well-known
antioxidant
properties
typical
natural
phenolic
compounds
some
newly
synthesized
safe
profile
are
effective
inhibitors
α-glucosidase
potential
application
management
hyperglycemia.
synthetic
approach
offers
promising
strategy
for
exploring
biologically
relevant
chemical
space,
bridging
gap
between
products
drug
synthesis.
Synthesis
of
water-stable
and
dispersible
heterogeneous
catalysts
having
high
catalytic
efficiency
is
more
challenging
compared
with
homogeneous
due
to
their
low
dispersity,
activity,
spatial
confinement
active
centers
in
bulk
water.
Herein,
we
are
describing
systematic
studies
for
the
development
microconfinement
participation
aqueous
micelles
via
temporal
surface
modification
porous
organic
polymer
derived
from
phosphine
ligands.
Detailed
investigations
using
various
techniques
such
as
transmission
electron
microscopy
(TEM),
scanning
(SEM),
tensiometry,
confocal
laser
(CLSM),
fluorescence
lifetime
imaging
(FLIM)
have
been
used
understand
role
micelles,
reagents,
materials
generation
microcolonies
Two-color
crossover
experiments
also
performed
exchange
reagents
or
vice
versa,
materials.
The
surfactant-modified
ligation
stabilization
palladium,
which
was
evidenced
by
high-resolution
(HR-TEM),
high-angle
annular
dark-field
(HAADF-STEM),
X-ray
photoelectron
spectroscopy
(XPS)
analysis.
act
confined
space
catalysis
water
showcasing
Suzuki-Miyaura
cross-coupling
reaction
a
ppm
level
Pd
loading
under
mild
conditions.
catalyst
found
be
recyclable
five
cycles;
easy
scale-up
C-C
couplings
additional
features.
Moreover,
these
data
provide
an
opportunity
revising
models
micellar
systems
that
underpin
sustainable
Tenside Surfactants Detergents,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
Abstract
The
oxidation
of
amino
acids
is
interesting
due
to
the
different
molecules
generated
by
oxidants.
This
research
crucial
understand
role
in
redox
processes
and
identify
active
species
Ru(III)
diperiodatocuprate(III)
(DPC).
purpose
present
analyze
effect
cationic
surfactant
on
catalysed
l
-tyrosine
(
-Tyr)
DPC.
progression
reaction
was
evaluated
using
pseudo-first-order
scenario
as
a
metric
for
[OH
−
],
[DPC],
ionic
strength,
[
-Tyr],
[Ru(III)],
[IO
4
[surfactant],
temperature.
Over
range
concentrations
studied,
observed
exhibits
kinetic
order
less
than
one
with
respect
both
]
negative
fractional
first-order
dependence
[Ru(III)]
[DPC].
constancy
rate
electrolyte
addition
suggests
zero
salt
effect.
markedly
increased
solution
acting
catalyst
at
ppm
concentration.
micellar
media
cetylpyridinium
chloride
(CPC)
significantly
accelerates
desired
reaction,
achieving
fourfold
increase.
compatibility
CPC
-Tyr
DPC
particularly
noteworthy.
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 14, 2025
A
series
of
bisphosphine-grafted
amphiphilic
polymers
based
on
polyethylene
glycol-poly(vinylethylene
glycol)
(PEG-PVEG)
copolymers
have
been
synthesized
by
using
allylic
etherification
polymerization
as
a
pivotal
step.
Self-assembling
the
palladium
complexes
obtained
into
spherical
micelles
has
investigated
UV-vis,
DLS
and
TEM
analysis.
The
outstanding
catalytic
performance
present
micellar
catalyst
evidenced
in
aqueous
Suzuki-Miyaura
coupling
reaction,
achieving
remarkable
efficiency
even
at
low
loading
100
ppm
within
2
h.
Organic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(16), P. 4624 - 4638
Published: Jan. 1, 2024
This
review
highlights
recent
advancements
in
photocatalytic
organic
transformations
aqueous
media
employing
the
water-compatible
solid-state
sensitizer
carbon
nitride
and
its
derivatives
as
catalysts.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(31), P. 11473 - 11479
Published: July 15, 2024
A
nonionic
surfactant
has
been
developed
from
agricultural
waste
and
its
potential
application
for
the
Ni-catalyzed
C–P
cross-coupling
reaction
in
water.
The
was
fully
characterized
by
various
spectroscopic
imaging
techniques.
size
of
micelles
morphological
changes
presence
catalysts/substrates
were
established
using
transmission
electron
microscopy
(TEM),
dynamic
light
scattering
(DLS),
confocal
microscopy.
Controlled
31P
NMR,
19F
mass
spectrometry,
X-ray
photoelectron
spectroscopy
(XPS)
analysis
revealed
possible
reactive
intermediates
mechanisms.
synthesis
shown
20
g
1
scale,
respectively.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(33), P. 4483 - 4486
Published: Jan. 1, 2024
While
in
nature,
reactions
occur
water-based
confined
compartments,
for
a
long
time,
water
has
been
often
regarded
as
an
unsuitable
medium
organic
reactions.
We
have,
however,
found
that
photochemical
cyclopropanation
of
styrenes
with
diazo
compounds
or
their
precursors
can
be
performed
micellar
systems.
COSMO-RS
studies
revealed
the
reactivity
correlates
predicted
critical
micelle
concentration
(CMC),
higher
CMC
values
delivering
yields.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(29), P. 19828 - 19838
Published: July 9, 2024
In
recent
years,
methodologies
that
rely
on
water
as
the
reaction
medium
have
gained
considerable
attention.
The
unique
properties
of
micellar
solutions
were
shown
to
improve
regio-,
stereo-,
and
chemoselectivity
different
transformations.
Herein,
we
demonstrate
aqueous
environment
is
a
suitable
for
visible
light
driven
cobalt-catalyzed
involving
radical
species.
this
system,
reduced
vitamin
B
