Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 31, 2023
Abstract
Different
solid
superacid
sulfated
ZrO
2
(SO
4
2-
/ZrO
)
samples
were
successfully
prepared
by
conventional
and
ultrasonic
assisted
chemical
precipitation
process,
then
they
characterized
XRD,
FT-IR,
TGA,
BET,
NH
3
-TPD
Py-FT-IR.
The
results
indicate
that
the
acidity
surface
area
of
sample
can
be
increased
using
ultrasonic.
Furthermore,
this
ultrasonic-assisted
catalyst
was
used
for
chlorobenzene
nitration
NO
as
nitrating
agent.
shows
excellent
catalytic
activity
reusability
giving
high
para
selectivity.
reaction
mechanism
proposed
combination
experimental
theoretical
calculations.
present
work
provides
an
easy-to-implement,
mild
environmentally
friendly
approach
efficient
preparation
valuable
-nitrochlorobenzene,
which
has
extensive
industrial
application
prospects.
The Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
88(15), P. 11322 - 11327
Published: July 18, 2023
In
this
work,
we
developed
a
facile
and
controllable
electrophilic
aromatic
nitration
method
with
commercially
available
68%
HNO3
as
the
nitrating
reagent
trifluoromethanesulfonic
acid
(HOTf)
catalyst
in
hexafluoroisopropanol
or
under
solvent-free
conditions.
The
products
of
different
arenes
can
be
obtained
almost
quantitative
yields
by
tuning
loading
HOTf.
strong
acidity
water
absorbing
property
HOTf
allowed
transformation
to
reach
completion
short
time
at
room
temperature.
Green Chemistry,
Journal Year:
2023,
Volume and Issue:
25(19), P. 7508 - 7517
Published: Jan. 1, 2023
Rethinking
nitration:
sustainable
electrochemical
C-N
functionalization.
This
work
reviews
diverse
inorganic
nitrogen
sources
for
fine
chemical
production,
with
a
perspective
on
innovative
pathways
to
harness
alternative
sources'
potential.
The Journal of Organic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 15, 2025
In
this
article,
we
provide
an
extended
substrate
scope
and
more
detailed
mechanistic
studies
of
operationally
simple
generally
applicable
arene
nitration
that
previously
reported.
This
method
utilizes
safe
inexpensive
Fe(NO3)3•9H2O
as
the
nitro
source
in
easily
recyclable
HFIP
obviates
need
for
corrosive
acids
(HNO3
+
H2SO4).
As
a
result,
speculated
it
could
serve
effective
substitute
traditional
mixed
acid
approach
under
most
scenarios
due
to
its
operational
simplicity.
A
general
guidance
application
was
provided.
Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(7), P. 1661 - 1668
Published: Feb. 7, 2024
Abstract
A
tert
‐butyl
nitrite
(TBN)
promoted
visible‐light‐induced
one‐pot
C−N
cross
coupling
reaction
of
3‐alkylidene‐2‐oxindoles
with
benzene‐1,2‐diamine
was
explored.
Simultaneously,
the
indoline
motif
as
well
3‐ylidene
oxindoles
are
regioselectively
nitrated
at
C‐6
position
by
in‐situ
formed
NO
2
radical.
(
E
)‐3‐(2‐(aryl)‐2‐oxoethylidene)oxindole
and
)‐3‐ylidene
oxindole
produce
distinct
diastereomeric
products,
a
phenomenon
influenced
steric
bulk
functional
group.
The
experimental
findings
suggest
potential
involvement
radical
pathway
in
this
reaction.
Angewandte Chemie,
Journal Year:
2023,
Volume and Issue:
135(28)
Published: April 25, 2023
Abstract
Hiermit
stellen
wir
einen
elektrochemisch
unterstützten
Prototypen
für
die
Erzeugung
von
Nitrylradikalen
aus
Eisen(III)‐nitrat
unter
milden
Reaktionsbedingungen
vor,
wobei
eine
einfache
Vorrichtung
mit
kostengünstigen
Graphit‐
und
Edelstahlelektroden
verwendet
wurde.
Die
einzigartige
Reaktionsweise
wurde
durch
detaillierte
spektroskopische
experimentelle
Studien
mechanistisch
bewiesen.
synthetische
Vielseitigkeit
dieses
Konzepts
Entwicklung
hocheffizienter
Nitrierungsprotokolle
verschiedene
ungesättigte
Kohlenwasserstoffe
demonstriert,
Elektrizität
betrieben
Elektronen
angetrieben
werden.
Diese
Protokolle
haben
nicht
nur
breiten
Anwendungsbereich,
sondern
lassen
sich
auch
leicht
auf
Dekagramme
skalieren
weisen
außergewöhnliche
Substratvielfalt
Kompatibilität
funktionellen
Gruppen
auf.
