Transition metal-catalyzed olefination of alkyl heteroarenes with alcohols
Tetrahedron,
Год журнала:
2024,
Номер
168, С. 134306 - 134306
Опубликована: Окт. 18, 2024
Язык: Английский
NNN-Ru complexes catalyzed β-methylation of alcohols using methanol via borrowing hydrogen approach
Journal of Catalysis,
Год журнала:
2025,
Номер
unknown, С. 116026 - 116026
Опубликована: Фев. 1, 2025
Язык: Английский
Heterogeneous Mn@CeO2 Catalyst for α-Alkylation of Ketones with Alcohols via Hydrogen-Borrowing Strategy
Rajagopal Swaathy,
S. Karthikeyan
ACS Omega,
Год журнала:
2025,
Номер
10(9), С. 9649 - 9660
Опубликована: Фев. 24, 2025
Construction
of
a
C-C
bond
via
alkylation
ketones
with
alcohol
as
the
alkylating
source
by
employing
hydrogen-borrowing
strategy
is
attracting
significant
attention
and
highly
appealing
due
to
its
simplicity,
cost-effectiveness,
environmental
benefits,
fact
that
water
only
byproduct.
The
development
heterogeneous
catalysts
based
on
nonprecious
base
metals
progressing
rapidly.
Our
newly
disclosed
manganese-doped
cerium
oxide
nanocomposite
(10
wt
%
Mn@CeO2)
stands
out
cost-efficient
air-stable
catalyst,
synthesized
through
straightforward
coprecipitation
method
employed
for
α-alkylation
primary
alcohols
strategy.
X-ray
diffraction
(XRD)
analysis
confirms
high
crystallinity
CeO2,
while
field
emission
scanning
electron
microscopy
(FE-SEM)
high-resolution
transmission
(HR-TEM)
images
reveal
MnO2
nanoparticles,
measuring
19
nm
in
size,
uniformly
decorated
rod-shaped
CeO2
which
have
size
33
nm.
photoelectron
spectroscopy
(XPS)
uncovers
presence
Mn4+
species
embedded
nanorods.
Electron
paramagnetic
resonance
(EPR)
further
indicates
surface
defects
contribute
impressive
catalytic
yield,
ranges
from
70
98%
α-alkylated
ketones.
Thermogravimetric
(TGA)
demonstrates
remarkable
thermal
stability
maintaining
up
800
°C.
Additionally,
inductively
coupled
plasma
mass
spectrometry
(ICP-MS)
no
leaching
Mn
ions,
emphasizing
heterogeneity
catalyst.
Remarkably,
10
Mn@CeO2
recycled
six
cycles
loss
activity.
This
study
underscores
synergistic
effect
between
metal
redox
pair
key
exceptional
activity
reactions,
making
promising
catalyst
sustainable
efficient
formation.
Язык: Английский
Construction of effective and recyclable non-precious metal coordination polymers and their multiple applications in water
Chinese Chemical Letters,
Год журнала:
2025,
Номер
unknown, С. 111165 - 111165
Опубликована: Апрель 1, 2025
Язык: Английский
Transition-Metal-Catalyzed C(sp3)–H Alkylation of Methyl Heteroarenes with Alcohols
Catalysts,
Год журнала:
2024,
Номер
14(12), С. 881 - 881
Опубликована: Дек. 3, 2024
Transition-metal-catalyzed
C(sp3)-H
bond
functionalization
is
a
useful
transformation
for
the
construction
of
C–C
bonds.
A
versatile
and
easy-to-perform
protocol
in
this
respect
C-alkylation
methyl
heteroarenes
with
alcohols
using
auto-transfer
hydrogenative
(ATH)
reactions.
Various
transition
metal
catalysts
based
on
Ir,
Pt,
Ru,
Ni,
Co,
Fe
Mn
have
been
employed
chain-elongated
alkyl-substituted
heterocyclic
compounds
chemistry.
Water
only
byproduct
starting
are
less
toxic,
readily
available,
more
easily
handled
atom-economical
substrates
than
their
halogen
counterparts.
This
review
details
recent
advances
synthetic
methodology,
describing
scope,
reaction
mechanism,
chemo-selectivity
applications.
Язык: Английский