Multi-hydroxyl POSS supported iridium complexes as a recyclable catalyst for selective synthesis of N-/C-substituted indoles and the total synthesis of HIV-1 fusion inhibitor
Journal of Catalysis,
Год журнала:
2023,
Номер
429, С. 115205 - 115205
Опубликована: Ноя. 24, 2023
Язык: Английский
Preparation of a novel cadmium-containing coordination polymer and catalytic application in the synthesis of N-alkylated aminoquinoline derivatives via the borrowing hydrogen approach
Dalton Transactions,
Год журнала:
2024,
Номер
53(11), С. 5064 - 5072
Опубликована: Янв. 1, 2024
Herein,
we
report
an
efficient
and
straightforward
approach
for
the
synthesis
of
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
Valorization of Lignocellulosic Molecules through Homogeneous Ru‐Catalyzed C−C and C−N Bond Forming Reactions
ChemistrySelect,
Год журнала:
2024,
Номер
9(5)
Опубликована: Янв. 30, 2024
Abstract
A
sustainable
upgrading
of
renewable
bulk
materials,
obtained
by
decomposition
biomass
lignocellulose,
could
facilitate
their
use
in
the
industrial
production
chemicals.
Homogeneous
ruthenium
catalysis
plays
a
fundamental
role
this
area.
The
review
deals
with
upgradation
lignocellulosic
molecules
through
formation
new
C−C
and
C−N
bonds.
Selected
examples
catalytic
bond
forming
reactions
reported
until
mid
2023,
include:
(a)
dehydrogenative
based
couplings
alcohols,
(b)
reductive
amination
carbonyl
compounds,
(c)
direct
C−H
functionalization
(hetero)aromatic
compounds.
These
approaches
fulfill
requirements
sustainability:
application
occurs
without
any
previous
substrate
activation,
thus
reducing
waste.
New
chemicals
containing
intrinsic
molecular
structure
lignocellulose
substrates,
showed
broad
range
applications:
green
fuels,
hydrogen
carriers,
monomers
polymers,
intermediates
fine
pharmaceuticals.
results
discussed
inspire
reader
to
improve
valorization
process,
terms
bio‐substrate
scope
as
well
product
complexity,
more
strategic
applications
methods.
Язык: Английский
Pd supported Al-BDC MOF for efficient and selective N-methylation of amines under solventless conditions
Emergent Materials,
Год журнала:
2024,
Номер
7(4), С. 1683 - 1693
Опубликована: Март 19, 2024
Язык: Английский
Fabricating Effective and Recyclable Cadmium‐based Coordination Polymer for Selective Synthesis of 1,5‐Benzodiazepines
Asian Journal of Organic Chemistry,
Год журнала:
2023,
Номер
12(12)
Опубликована: Окт. 9, 2023
Abstract
Metal
coordination
polymers
are
widely
applied
in
the
synthesis
of
heterocyclic
compounds
due
to
advantages
highly
dispersed
metal
active
sites,
low
cost
and
strong
designability.
Herein,
employing
9‐benzyl‐3,6‐di(
1H
‐pyrazol‐1‐yl)‐
9H
‐carbazole
(BPC)
as
a
ligand,
cadmium‐coordinated
polymer
compound
(Cd‐BPC)
was
facilely
prepared
by
solvothermal
method
characterized
energy
dispersive
spectrometer
(EDS),
flourier‐transform
infrared
spectroscopy
(FT‐IR),
scanning
electron
microscope
(SEM),
transmission
microscopy
(TEM)
X‐ray
photoelectron
spectrometry
(XPS).
Employing
Cd‐BPC
catalyst,
1,5‐benzodiazepine
derivatives
were
produced
with
relatively
high
yields
through
reaction
o
‐phenylenediamine
ketones,
alcohols.
Additionally,
could
be
reused
for
at
least
5
times
without
significant
decrease.
Язык: Английский