ACS Catalysis,
Год журнала:
2018,
Номер
8(3), С. 2242 - 2246
Опубликована: Фев. 6, 2018
Through
radical-induced
tandem
triple
C–H
aminations
with
free
amines
as
the
aminating
agents,
we
herein
present
a
precedent
on
aerobic
copper-catalyzed
synthesis
of
5-diarylamino
benzimidazoles,
class
optoelectronic
device
analogues
by
combining
two
molecules
diarylamines
and
one
molecule
alkylamine
in
single
operation.
The
developed
chemistry
proceeds
merits
natural
abundant
copper/O2
catalyst
system,
readily
available
feedstocks,
broad
substrate
scope,
good
functional
group
tolerance,
exclusive
regio-
chemoselectivity,
high
step
atom
efficiency,
which
offers
an
important
basis
for
further
construction
products
that
are
inaccessible
or
difficult
to
prepare
existing
methods
employing
catalytic
amination
strategy.
ChemSusChem,
Год журнала:
2018,
Номер
11(22), С. 3911 - 3916
Опубликована: Окт. 5, 2018
Abstract
A
transition‐metal‐catalyzed
borrowing
hydrogen/hydrogen
auto‐transfer
strategy
allows
the
utilization
of
feedstock
alcohols
as
an
alkylating
partner,
which
avoids
formation
stoichiometric
salt
waste
and
enables
a
direct
benign
approach
for
construction
C‐N
C−C
bonds.
In
this
study,
nickel‐catalyzed
α‐alkylation
unactivated
amides
ester
(
tert
‐butyl
acetate)
is
carried
out
by
using
primary
under
mild
conditions.
This
bond‐forming
reaction
catalyzed
new,
molecularly
defined
nickel(II)
NNN‐pincer
complex
(0.1–1
mol
%)
proceeds
through
hydrogen
auto‐transfer,
thereby
releasing
water
sole
byproduct.
addition,
N
‐alkylation
cyclic
Ni‐catalytic
conditions
demonstrated.
Organic Chemistry Frontiers,
Год журнала:
2019,
Номер
6(19), С. 3420 - 3427
Опубликована: Янв. 1, 2019
Modified
poly
2,4-dichlorostyrene
microspheres
were
designed
and
synthesized,
proved
to
be
an
effective
carrier
synthesize
supported
manganese
dioxide
nanoparticles.
Chemical Communications,
Год журнала:
2020,
Номер
56(55), С. 7585 - 7588
Опубликована: Янв. 1, 2020
An
oxidant-free
electrochemical
dehydrogenative
cross-coupling
of
xanthenes
and
ketones
for
the
preparation
functionalized
9-alkyl-9H-xanthenes
was
developed.
Chemical Communications,
Год журнала:
2020,
Номер
56(50), С. 6850 - 6853
Опубликована: Янв. 1, 2020
A
simple
nickel-catalyst
for
the
chemo-selective
alkylation
of
acetonitrile
derivatives
with
primary
alcohols
is
reported.
This
sustainable
process
resulted
in
up
to
90%
yield
and
generates
water
as
by-product.
The Journal of Organic Chemistry,
Год журнала:
2017,
Номер
82(8), С. 4113 - 4120
Опубликована: Март 3, 2017
RuCl3
efficiently
catalyzes
the
alkylation
of
methylquinolines,
methylpyridines,
2-methyl-benzooxazoles,
and
2-methyl-quinoxalines
with
alkyl-
or
aryl-alcohols
as
alkylating
agents.
This
synthetically
useful
atom
economical
transformation
does
not
require
additional
ligands.
The
mechanistic
study
indicated
reaction
underwent
a
stepwise
transfer
hydrogenation,
aldol
condensation,
hydrogenation
pathway.
Chemical Communications,
Год журнала:
2018,
Номер
54(87), С. 12369 - 12372
Опубликована: Янв. 1, 2018
The
first
base-metal
catalysed
coupling
of
primary
alcohols
with
methyl-N-heteroaromatics
is
reported.
use
an
earth
abundant
and
nonprecious
NiBr2/L1
system
enables
access
to
a
series
C(sp3)-alkylated
N-heteroaromatics.
Mechanistic
studies
have
established
the
participation
hydrogen-borrowing
strategy
for
α-alkylation.
Catalysis Science & Technology,
Год журнала:
2019,
Номер
10(2), С. 360 - 371
Опубликована: Ноя. 29, 2019
OMS-2-based
nanocomposites
doped
with
sodium
phosphotungstate
were
prepared
and
their
remarkably
enhanced
catalytic
activity
recyclability
in
aerobic
oxidative
dehydrogenation
of
N-heterocycles
examined
detail.
Chemical Communications,
Год журнала:
2016,
Номер
52(70), С. 10636 - 10639
Опубликована: Янв. 1, 2016
A
ruthenium-catalyzed
annulative
transfer
hydrogenation
strategy,
enabling
straightforward
access
to
tetrahydro
fused-pyrazine
derivatives
from
N-heteroaryl
diamines
and
vicinal
diols,
is
demonstrated.
The Journal of Organic Chemistry,
Год журнала:
2017,
Номер
82(17), С. 9198 - 9203
Опубликована: Июль 27, 2017
A
copper-catalyzed
three-component
reaction
of
methyl
ketones,
organic
azides,
and
various
one-carbon
(C1)
donors
was
developed
that
provides
4-acyl-1,2,3-triazoles
in
moderate
to
good
yields.
While
DMF,
DMA,
TMEDA,
or
DMSO
can
serve
as
the
C1
donor,
best
yields
were
obtained
using
DMF.
The
transformation
is
proposed
proceed
via
an
oxidative
C-H/C-H
cross-dehydrogenative
coupling
followed
by
1,3-dipolar
cycloaddition.
