Tetrahedron Green Chem,
Год журнала:
2023,
Номер
1, С. 100008 - 100008
Опубликована: Янв. 1, 2023
The
development
of
effective
methodologies
for
the
sustainable
production
chemicals
and
biofuels
from
lignocellulosic
biomass
has
attracted
immense
attention
scientific
community.
However,
it
is
challenging
due
to
highly
complex
nature
sources.
Over
past
few
decades,
numerous
reports
targeting
various
catalytic
transformation
reactions
highlighting
vital
role
catalysts
in
substrate
activation
product
selectivity
have
appeared
literature.
Through
this
perspective,
we
present
recent
advances
metal
complexes-based
molecular
catalysis
transforming
biomass-derived
5-hydroxymethylfurfural
(5-HMF)
furfural
(FAL)
industrially
important
chemicals,
materials,
pharmaceuticals,
biofuels.
This
article
focuses
on
5-HMF
FAL
involving
hydrogenation,
ring
opening,
hydrogenolysis,
oxidation,
amination
over
catalysts,
provide
insights
into
systems
explored
allied
areas.
The Journal of Organic Chemistry,
Год журнала:
2023,
Номер
88(4), С. 2245 - 2259
Опубликована: Фев. 8, 2023
Catalytic
reduction
reactions
using
methanol
as
a
transfer
hydrogenating
agent
is
gaining
significant
attention
because
this
simple
alcohol
inexpensive
and
produced
on
bulk
scale.
Herein,
we
report
the
catalytic
utilization
of
hydrogen
source
for
different
functional
organic
compounds
such
nitroarenes,
olefins,
carbonyl
compounds.
The
key
to
success
transformation
use
commercially
available
Pt/C
catalyst,
which
enabled
hydrogenation
series
functionalized
nitroarenes-to-anilines,
alkenes-to-alkanes,
aldehydes-to-alcohols
both
solvent
donor.
practicability
Pt-based
protocol
showcased
by
demonstrating
catalyst
recycling
reusability
well
reaction
upscaling.
In
addition,
system
was
also
adaptable
N-methylation
N-alkylation
anilines
via
borrowing
process.
This
work
provides
flexible
approach
prepare
variety
value-added
products
from
readily
methanol,
Pt/C,
other
starting
materials.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(4), С. 2072 - 2081
Опубликована: Янв. 17, 2024
Coordinatively
unsaturated
complexes
are
interesting
from
a
fundamental
level
for
their
formally
empty
coordination
site
and,
in
particular,
catalytic
perspective
as
they
provide
opportunities
substrate
binding
and
transformation.
Here,
we
describe
the
synthesis
of
novel
underligated
ruthenium
complex
[Ru(cym)(N,N')]
Green Chemistry,
Год журнала:
2022,
Номер
24(6), С. 2542 - 2556
Опубликована: Янв. 1, 2022
An
air-stable,
recyclable,
and
sustainable
copper
catalyst
was
efficiently
utilized
for
the
aerobic
oxidation
of
biomass
model
compound
vanillyl
alcohol
to
important
aroma
vanillin
under
green
conditions.
Base
metal
catalyzed
transfer
hydrogenation
reactions
using
methanol
is
highly
challenging.
Employing
a
single
N-heterocyclic
carbene
(NHC)-based
pincer
(CNC)MnI
complex,
chemoselective
and
double
of
α,
β-unsaturated
ketones
to
saturated
or
alcohols
by
utilizing
as
the
hydrogen
source
disclosed.
The
protocol
was
tolerant
towards
selective
C=C
C=O
bonds
in
presence
several
other
reducible
functional
groups
led
synthesis
biologically
relevant
molecules
natural
products.
Notably,
this
first
report
Mn-catalyzed
carbonyl
with
methanol.
Several
control
experiments,
kinetic
studies,
Hammett
density
theory
(DFT)
calculations
were
carried
out
understand
mechanistic
details
catalytic
process.
Organic Letters,
Год журнала:
2022,
Номер
24(50), С. 9179 - 9183
Опубликована: Ноя. 22, 2022
Herein
we
report
efficient
catalytic
hydrosilylations
of
nitroarenes
to
form
the
corresponding
aromatic
amines
using
a
well-defined
manganese(II)-NNO
pincer
complex
with
low
catalyst
loading
(1
mol
%)
under
solvent-free
conditions.
This
base-metal-catalyzed
hydrosilylation
is
an
easy
and
sustainable
alternative
classical
hydrogenation.
A
large
variety
bearing
various
functionalities
were
selectively
transformed
into
in
good
yields.
The
potential
utility
present
protocol
was
demonstrated
by
preparation
commercial
drug
molecules.
The Journal of Organic Chemistry,
Год журнала:
2022,
Номер
87(19), С. 13259 - 13269
Опубликована: Сен. 12, 2022
Investigation
of
a
variety
Lewis
acids
for
the
hydroboration-hydrolysis
(reduction)
ketones
with
amine-boranes
has
revealed
that
catalytic
(10
mol
%)
titanium
tetrachloride
(TiCl4)
in
diethyl
ether
at
room
temperature
immensely
accelerates
reaction
ammonia
borane.
The
product
alcohols
are
produced
good
to
excellent
yields
within
30
min,
even
which
typically
requires
24
h
or
longer
reduce
under
uncatalyzed
conditions.
Several
potentially
reactive
functionalities
tolerated,
and
substituted
cycloalkanones
reduced
diastereoselectively
thermodynamic
product.
A
deuterium
labeling
study
11B
NMR
analysis
have
been
performed
verify
proposed
hydroboration
mechanism.
Chemical Communications,
Год журнала:
2022,
Номер
58(26), С. 4255 - 4258
Опубликована: Янв. 1, 2022
Catalytic
transfer
hydrogenation
(TH)
for
the
reduction
of
heterocycles
is
an
emerging
strategy
accessing
biologically
active
saturated
N-heterocycles.
Herein,
we
report
a
TH
protocol
that
utilizes
ethanol
as
renewable
hydrogen
source
and
Ir
catalyst
quinolines
pyridines.
The
reaction
promoted
by
simple
amides
ligands.
Catalysis Science & Technology,
Год журнала:
2023,
Номер
13(18), С. 5422 - 5434
Опубликована: Янв. 1, 2023
Three
new
copper(
ii
)
complexes
were
synthesized
and
successfully
utilized
as
effective
catalysts
for
the
selective
aerobic
oxidation
of
biomass
derived
veratryl
alcohol
to
veratraldehyde
in
water
a
green
sustainable
reaction
medium.
