NNO Pincer-Supported Pd(II)-Catalyzed Reductive N-Alkylation of Challenging Nitroarenes with Alcohols via Borrowing Hydrogen Strategy
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(16), С. 11161 - 11172
Опубликована: Июль 31, 2024
A
sustainable
catalytic
synthesis
of
selective
monoalkylated
amines
from
nitroarenes
and
alcohols
by
new
palladium(II)-NNO
pincer-type
complexes
has
been
described.
Herein,
a
series
Pd(II)
[Pd(NNO)PPh
Язык: Английский
Zn(II)-Stabilized Azo-Anion Radical-Catalyzed Dehydrogenative Synthesis of Olefins
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
Herein,
we
describe
a
Zn-catalyzed
atom-economical,
inexpensive,
and
sustainable
method
for
preparing
broad
spectrum
of
substituted
olefins
utilizing
alcohols
as
the
main
precursor.
Using
Zn(II)
complex
[ZnLCl2]
(1)
redox-noninnocent
ligand
2-((4-chlorophenyl)diazenyl)-1,10-phenanthroline
(L),
various
(E)-olefins
were
prepared
in
good
yields
by
coupling
with
sulfones
aryl
cyanides
under
an
inert
atmosphere.
Under
aerial
atmosphere,
vinyl
nitriles
isolated
up
to
82%
yield
reacting
benzyl
presence
1.
Control
experiments
mechanistic
investigation
indicate
active
involvement
aryl-azo
electron
hydrogen
reservoir,
permitting
1
perform
promising
catalyst.
Язык: Английский
Sustainable Synthesis of Substituted 1,3,5-Triazines by [ONO]-Pincer-Supported Nickel(II) Complexes via an Acceptorless Dehydrogenative Coupling Strategy
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 18, 2024
A
facile,
cost-effective,
and
sustainable
synthesis
of
substituted
triazines
from
primary
alcohols
by
newly
synthesized
nickel
pincer-type
complexes
(1–3)
has
been
described.
Herein,
we
report
the
a
set
three
well-defined
Ni(II)
O^N^O
complexes,
structurally
characterized
analytical,
spectral,
X-ray
diffraction
techniques.
Further,
are
explored
as
efficient
catalysts
(4
mol
%)
for
construction
2,4,6-substituted
1,3,5-triazines
readily
available
via
an
acceptorless
dehydrogenative
coupling
(ADC)
strategy.
wide
range
triazine
derivatives
(33
examples)
benzamidine/guanidine
hydrochloride
with
maximum
isolated
yield
92%
under
mild
conditions,
eco-friendly
H2O
H2
gas
only
byproducts.
plausible
mechanism
proposed
based
on
sequence
control
experiments.
Interestingly,
short
antiulcer
drug
irsogladine
large-scale
2,4-diphenyl-6-(p-tolyl)-1,3,5-triazine
highlight
convenience
current
methodology.
Язык: Английский