Journal of Synthetic Organic Chemistry Japan,
Год журнала:
2024,
Номер
82(11), С. 1052 - 1062
Опубликована: Ноя. 1, 2024
We
have
developed
three
catalytic
reactions
involving
borylation
and
C-C
bond
formation
using
bis(pinacolato)diboron
(B2pin2),
extended
their
use
to
the
synthesis
of
pharmaceuticals
luminescent
dyes.
In
addition,
we
also
elucidated
photophysical
properties
those
The
first
reaction
is
a
Cu-catalyzed
stereoselective
glycosyl
bromide
β-glycosyl
trifluoroborates,
which
has
been
further
expanded
synthesize
aryl
β-C-glycosides
via
Pd-catalyzed
stereospecific
cross-coupling
with
bromides.
These
methods
were
applied
SGLT2
inhibitor,
canagliflozin.
second
involves
copper-catalyzed
acyl
chlorides
form
fluorescent
C,N-chelated
2,2-difluoro-1,4-diazaboroles
condensation
various
amino-heterocycles.
third
an
organocatalytic
pinacol
coupling
aldehydes
B2pin2
as
reductant
substituted
pyridine
catalyst.
resulting
diols
converted
benzils,
revealing
such
phosphorescence,
fluorescence,
self-recovering
phosphorescence-to-phosphorescence
mechanochromism.
studies
demonstrated
usefulness
for
producing
pharmaceuticals,
pharmaceutical
candidates
novel
materials,
well
making
possible
investigation
products
physical
properties.
Abstract
H
2
generation
from
methanol‐water
mixtures
often
requires
high
pressure
and
temperature
(200–300
°C).
However,
CO
can
be
easily
generated
poison
the
catalytic
system
under
such
temperature.
Therefore,
it
is
highly
desirable
to
develop
efficient
systems
for
production
methanol
at
room
temperature,
even
sub‐zero
temperatures.
Herein,
carbon
nanotube‐supported
Pt
nanocomposites
are
designed
synthesized
as
high‐performance
nano‐catalysts,
via
stabilization
of
nanoparticles
onto
nanotube
(CNT),
upon
dehydrogenation
Therein,
optimal
Pt/CNT
nanocomposite
presents
superior
performance
in
expense
B
(OH)
4
,
with
TOF
299.51
min
‐1
30
o
C.
Compared
other
common
carriers,
exhibited
highest
production,
emphasizing
critical
role
CNT
dehydrogenation.
The
confinement
by
CNTs
conducive
inhibiting
aggregation
nanoparticles,
thereby
significantly
increasing
its
stability.
kinetic
study,
detailed
mechanistic
insights,
density
functional
theory
(DFT)
calculation
confirm
that
breaking
O─H
bond
CH
3
OH
rate‐controlling
step
dehydrogenation,
both
atoms
supplied
methanol.
Interestingly,
also
successfully
produced
−10
°C,
which
absolutely
solves
freezing
problem
evolution
water‐splitting
reaction.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(29), С. 18367 - 18380
Опубликована: Янв. 1, 2024
This
work
provides
new
insights
for
efficient
H
2
production
by
offering
adsorption
and
reduction
active
sites.
The
study
indicates
that
TA-GDY
selectively
triggers
electron
migration
through
the
interaction
between
nitrogen
atoms
acetylene
bonds.
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
8(8)
Опубликована: Март 1, 2024
Abstract
In
this
paper,
nanosized
Zn
x
Cd
1‐
S
is
synthesized
by
a
simple
hydrothermal
method
and
modified
amorphous
CoB.
S/CoB
Schottky
heterojunction
composite
photocatalyst
reasonably
designed.
The
adhesion
of
tiny
nanoparticles
to
irregular
block
CoB
more
conducive
the
dispersion
better
interface
connection
between
catalysts,
thus
further
promoting
migration
photogenerated
carriers,
protecting
photocorrosion
S,
finally
improving
efficiency
photocatalytic
hydrogen
production.
catalyst
S/CoB‐20
means
that
loading
content
20
wt%,
has
highest
catalytic
under
visible
light,
reaching
1494.09
µmol
within
5
h.
Through
characterization
XRD,
XPS,
electrochemical
optical
properties
catalyst,
it
proved
introduction
can
significantly
inhibit
recombination
electron
holes
enhance
response
light.
This
study
provides
feasible
scheme
for
co‐catalysts
replace
precious
metal
catalysts
effectively
reduce
photocorrosion.
European Journal of Organic Chemistry,
Год журнала:
2024,
Номер
27(26)
Опубликована: Апрель 16, 2024
Abstract
Debenzylation
of
O
‐
and
N
‐benzyl
groups
was
achieved
under
safe
mild
conditions
by
using
B
2
(OH)
4
as
an
alternative
to
gaseous
hydrogen
in
the
presence
amphiphilic
polystyrene‐poly(ethylene
glycol)
resin‐supported
nano‐palladium
catalyst
(ARP−Pd)
water.
Benzyl
a
variety
benzylic
ethers,
esters,
carbamates,
amines,
including
benzyl‐protected
carbohydrates
amino
acids,
were
reductively
removed
high
yields.
ARP−Pd
recovered
simple
filtration
reused
seven
times
without
significant
loss
its
catalytic
activity.
