Chinese Journal of Chemistry,
Journal Year:
2022,
Volume and Issue:
40(13), P. 1608 - 1622
Published: April 3, 2022
Comprehensive
Summary
“Chain‐walking”
reactions
could
realize
to
modify
a
molecule
at
the
position
far
away
from
active
site.
It
has
been
hot
topic
in
research
field
of
organic
synthesis.
As
number
achievements
have
made
by
researchers,
products
transition
metal‐catalyzed
chain‐walking
be
obtained
with
good
enantioselectivity.
This
review
summarized
researches
on
asymmetric
catalyzed
metal
past
decade.
These
works
are
classified
according
species
catalysts.
Accounts of Chemical Research,
Journal Year:
2022,
Volume and Issue:
55(23), P. 3519 - 3536
Published: Nov. 9, 2022
Transition
metal
hydride
catalyzed
functionalization
of
remote
and
proximal
olefins
has
many
advantages
over
conventional
cross-coupling
reactions.
It
avoids
the
separate,
prior
generation
stoichiometric
amounts
organometallic
reagents
use
preformed
reagents,
which
are
sometimes
hard
to
access
may
compromise
functional
group
compatibility.
The
migratory
insertion
complexes
generated
in
situ
into
readily
available
alkene
starting
materials,
hydrometalation
process,
provides
an
attractive
straightforward
route
alkyl
intermediates,
can
undergo
a
variety
sequential
In
particular,
with
synergistic
combination
chain-walking
chemistry
nickel,
NiH-catalyzed
undergone
particularly
intense
development
past
few
years.
This
Account
aims
chronicle
progress
made
this
arena
terms
activation
modes,
diverse
functionalizations,
chemo-,
regio-,
enantioselectivity.We
first
provide
brief
introduction
general
reaction
mechanisms.
Taking
hydroarylation
as
example,
four
oxidation
states
Ni
have
allowed
us
develop
two
different
strategies
form
final
product:
Ni(I)-H/X-Ni(II)-H
platform
that
relies
on
reductants
Ni(I/II/III)
cycle
redox-neutral
or
FG-Ni(II)-H
reacts
substrate
forms
products
via
Ni(0/II)
pathway.
We
also
demonstrate
functionalization,
including
C-C
bond-forming
reactions
more
challenging
C-N/C-S
could
be
realized.
Moreover,
employment
appropriate
chiral
ligands
successfully
realize
corresponding
asymmetric
hydrofunctionalization
olefins,
hydroalkylation,
hydroarylation,
hydroalkenylation,
hydroalkynylation,
hydroamination.
Interestingly,
enantio-determining
step
enantioselective
hydronickelation,
selective
oxidative
addition,
reductive
elimination.
To
hydrofunctionalization,
we
developed
ligand
relay
catalytic
strategy
simple
ligands,
for
second
coupling.
novel
design
single,
possibly
structurally
complex
promote
both
steps
success
multicomponent
convenient
approach
gain
molecules.
Finally,
halides
used
olefin
precursors
cross-electrophile
coupling
Applications
these
discussed.
hope
will
inspire
future
field
overcome
key
challenges,
conceptually
new
strategies,
high-performance
systems
enhanced
reactivity
selectivity,
cutting-edge
catalyst
design,
further
mechanistic
studies.
Science China Chemistry,
Journal Year:
2022,
Volume and Issue:
65(3), P. 441 - 461
Published: Jan. 5, 2022
Abstract
Carbonylation,
one
of
the
most
powerful
approaches
to
preparation
carbonylated
compounds,
has
received
significant
attention
from
researchers
active
in
various
fields.
Indeed,
impressive
progress
been
made
on
this
subject
over
past
few
decades.
Among
types
carbonylation
reactions,
asymmetric
is
a
straightforward
methodology
for
constructing
chiral
compounds.
Although
rhodium-catalyzed
enantioselective
hydroformylations
have
discussed
several
elegant
reviews,
general
review
palladium-catalyzed
carbonylations
still
missing.
In
review,
we
summarize
and
discuss
recent
achievements
reactions.
Notably,
review’s
contents
are
categorized
by
reaction
type.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(2), P. 1722 - 1731
Published: Jan. 4, 2024
Herein,
we
report
a
ligand-controlled
palladium-catalyzed
method
that
enables
the
synthesis
of
ynones
and
γ-butenolides
with
excellent
regioselectivity
from
same
set
readily
available
aryl
iodides,
acetylenes,
BrCF2CO2K.
In
this
reaction,
[PdII]═CF2
does
demonstrate
electrophilicity
can
generate
CO
when
reacting
H2O.
It
is
environmentally
friendly
safe
compared
to
traditional
methods,
current
protocol
us
afford
in
high
yields
functionality
tolerance.
Moreover,
esters
also
be
obtained
corresponding
phenols
alcohols
utilizing
strategy.
The
success
late-stage
functionalization
bioactive
compounds
further
illustrates
synthetic
utility
material
development
drug
discovery.
Chinese Journal of Chemistry,
Journal Year:
2021,
Volume and Issue:
40(5), P. 651 - 661
Published: Dec. 3, 2021
Comprehensive
Summary
Enantioselective
NiH‐catalyzed
reductive
hydrofunctionalization
of
olefins
has
attracted
much
attention
in
recent
years.
Using
simple
chiral
ligands,
a
wide
array
functionalized
and
electrophiles
can
undergo
diverse
transformations
to
afford
hydrofunctionalized
products,
regio‐
enantioselectively.
These
processes
avoid
the
prior
preparation
organometallic
reagents,
construct
stereogenic
center
at
carbon
originating
either
from
olefin
or
electrophile.
This
review
discusses
background,
major
progress
mechanistic
investigations
this
reaction.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(44), P. 23584 - 23589
Published: Aug. 27, 2021
Regio-
and
enantioselective
hydroarylamination,
hydroalkylamination
hydroamidation
of
styrenes
have
been
developed
by
NiH
catalysis
with
a
simple
bioxazoline
ligand
under
mild
conditions.
A
wide
range
enantioenriched
benzylic
arylamines,
alkylamines
amides
can
be
easily
accessed
nitroarenes,
hydroxylamines
dioxazolones,
respectively
as
amination
reagents.
The
chiral
induction
in
these
reactions
is
proposed
to
proceed
through
an
enantiodifferentiating
syn-hydronickellation
step.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(31)
Published: May 25, 2022
Regiodivergent
alkene
functionalization
that
produces
either
regioisomer
starting
from
the
same
raw
materials
is
desirable.
Herein,
we
report
a
nickel-catalyzed
switchable
site-selective
hydroalkylation.
The
selection
of
reaction
temperatures
leads
to
protocols
provide
regiodivergent
hydroalkylated
products
single
substrate.
This
protocol
allows
convenient
synthesis
α-
and
β-branched
protected
amines,
both
which
are
important
fields
pharmaceutical
chemistry
biochemistry.
In
addition,
enantioenriched
alkylamines
can
be
accessed
in
catalytic
asymmetric
variant.
Preliminary
mechanistic
studies
indicate
formation
more
stable
nickelacycle
provides
driving
force
migration.
thermodynamic
kinetic
properties
different
reduction
elimination
intermediates
responsible
for
site-selectivity.
Journal of the American Chemical Society,
Journal Year:
2022,
Volume and Issue:
144(47), P. 21448 - 21456
Published: Nov. 17, 2022
Design
of
ligands
in
transition-metal
catalyzed
reactions
is
challenging,
especially
asymmetric
transformations.
With
each
step
the
catalytic
cycle
promoted
by
its
privileged
ligand
and
different
steps
well-connected
dynamic
exchange,
synergistic
combination
multiple
could
potentially
enhance
efficiency
selectivity.
Now,
this
concept
has
been
applied
to
NiH-catalyzed
remote
hydroacylation
olefins
migratory
acylation
alkyl
halides
with
excellent
regio-
enantioselectivity,
utilizing
two
simple
ligands,
one
for
chain-walking
other
acylation.
Starting
from
abundant
alkenes/alkyl
carboxylic
acids,
a
wide
range
enantioenriched
chiral
α-aryl
ketones
can
be
efficiently
accessed
under
mild
conditions.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(36)
Published: July 15, 2022
Abstract
The
asymmetric
Reppe
carbonylation
reactions
provide
a
straightforward
access
to
α
‐chiral
carbonyl
compounds.
reported
paradigms
predominantly
adopted
precious
palladium
as
the
catalyst.
Here
we
report
nickel‐catalyzed
of
cyclopropenes
with
phenyl
formate
and
CO/ROH,
respectively.
This
asymmetrical
synthetic
protocol
features
high
atom
economy,
good
functional
group
tolerance,
which
rapidly
constructs
polysubstituted
cyclopropanecarboxylic
derivatives
excellent
diastereo‐
enantioselectivity.
utility
is
demonstrated
by
facile
conversion
chiral
products
into
bioactive
molecules
such
(−)‐Tranylcypromine
(−)‐Lemborexant.