Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(35), P. 23897 - 23909
Published: Jan. 1, 2024
A
copper
single-atom
catalyst
(Cu
1
@C
3
N
5
-1)
has
been
developed
for
photocatalytic
oxidation
of
biomass-derived
furfural
and
5-hydroxymethylfurfural
to
obtain
maleic
anhydride.
O
2
·O
−
play
a
synergetic
role
during
the
reaction.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 24, 2024
Abstract
The
selective
hydrodeoxygenation
(HDO)
of
lignin‐derived
methoxyphenols
to
cyclohexanol
is
one
the
most
significant
transformation
in
biomass
conversion
since
an
important
industrial
raw
material.
This
study
has
disclosed
a
series
tungstated
zirconia
with
different
Zr/W
ratio
supported
Ru
catalysts
(Ru/xZrW,
x
means
molar
ration
Zr/W)
for
guaiacol
cyclohexanol.
Among
these
catalysts,
Ru/16ZrW
best
catalytic
activity,
which
can
achieve
92
%
yield
under
conditions
180
°C
and
1
MPa
H
2
pressure
h
(TOF
231
−1
).
Compared
Ru/ZrO
,
smaller
particles,
more
dispersed
electron‐rich
species,
hydrogen
spillover
acid
sites,
are
main
reason
its
excellent
performance
on
this
reaction.
Apart
from
guaiacol,
other
methoxy
substitution
phenols
organosolv
lignin
also
be
converted
into
via
reactions
over
catalyst.
Chinese Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 4, 2024
Comprehensive
Summary
An
efficiently
catalytic
method
toward
the
synthesis
of
indolin‐2‐ones
featuring
an
allylic
derived
C3‐quaternary
stereocenter
via
intramolecular
Heck
cyclization/Suzuki
coupling
N
‐substituted‐
‐(2‐bromophenyl)acrylamides
and
organoboron
reagents
was
successfully
developed
by
using
a
1,3‐bis(2,6‐diisopropylphenyl)acenaphthoimidazol‐2‐ylidene
(AnIPr)‐ligated
oxazoline
palladacycle.
It
enabled
very
broad
substrate
scope
tolerating
different
functional
groups,
electronic
properties
steric
bulkiness.
Notably,
it
revealed
great
potential
to
build
diverse
heterocycle‐fused
indoline
alkaloids
same
intermediate
3‐allyl‐1,3‐dimethylindolin‐2‐
one.