JACS Au,
Год журнала:
2023,
Номер
3(10), С. 2612 - 2630
Опубликована: Сен. 26, 2023
Alongside
enantioselective
catalysis,
synthetic
chemists
are
often
confronted
by
the
challenge
of
achieving
catalyst
control
over
relative
configuration
to
stereodivergently
access
desired
diastereomers.
Typically,
these
approaches
iteratively
or
simultaneously
multiple
stereogenic
units
for
which
dual
catalytic
methods
comprising
sequential,
relay,
and
synergistic
catalysis
emerged
as
particularly
efficient
strategies.
In
this
Perspective,
benefits
challenges
catalyst-controlled
diastereodivergence
in
construction
carbon
stereocenters
discussed
on
basis
illustrative
examples.
The
concepts
then
transferred
diastereodivergent
atropisomeric
systems
with
twofold
higher-order
stereogenicity
well
E-
Z-configured
alkenes.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(45)
Опубликована: Авг. 2, 2022
Abstract
Bimetallic
catalysis
has
emerged
as
an
efficient
strategy
for
the
development
of
new
chemical
reactions.
Importantly,
this
also
provides
a
simple
and
powerful
platform
stereodivergent
synthesis,
whereby
all
possible
stereoisomers
products
bearing
two
stereocenters
can
be
easily
prepared
from
same
set
starting
materials.
In
Minireview,
allylic
substitution,
propargylic
hydrofunctionalization,
annulation
based
on
bimetallic
been
summarized.
It
is
expected
that
more
catalytic
systems
will
developed
applied
synthesis
valuable
molecules.
ACS Catalysis,
Год журнала:
2024,
Номер
14(6), С. 3812 - 3844
Опубликована: Фев. 23, 2024
Chiral
skeletons
with
multiple
stereogenic
centers
widely
reside
in
nature
and
drugs,
their
relative
absolute
configuration
often
determine
physiological
or
pharmacological
properties.
Stereodivergent
synthesis
of
chiral
molecules
is
not
only
great
significance,
but
also
highly
challenging
since
the
formation
one
diastereomers
inherently
preferred
most
asymmetric
reactions.
dual
catalysis,
introduced
2013
by
Carreira
group,
perfectly
catered
to
all
requirements
for
full
stereoselectivity
control
given
reactions
two
catalysts
are
utilized
a
synergistic
way
act
independently,
has
now
been
arguably
efficient
strategy
realize
stereodivergent
synthesis.
This
comprehensive
review
presents
an
overview
development
enabled
catalysis
past
ten
years,
providing
readers
fundamental
attributes
as
well
ability,
scope,
mechanism,
limitations
this
strategy.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(8), С. 5493 - 5501
Опубликована: Фев. 13, 2024
Larock
indole
synthesis
is
one
of
the
most
straightforward
and
efficient
methods
for
indoles;
however,
there
has
been
no
asymmetric
version
yet
construction
indole-based
axially
chiral
N-arylindoles
since
its
initial
report
in
1991.
Herein
we
first
example
an
by
employing
a
sulfinamide
phosphine
(SadPhos)
ligand
(Ming-Phos)
with
palladium.
It
allows
rapid
wide
range
N-arylindole
compounds
good
yields
up
to
98:2
er.
The
application
this
unique
scaffold
as
organocatalyst
promising.
Furthermore,
kinetic
study
revealed
that
alkyne
migratory
insertion
rate-determining
step,
which
proven
density
functional
theory
(DFT)
calculations.
Additionally,
DFT
studies
also
suggest
N–C
dihedral
difference
caused
steric
hindrance
contributes
enantioselectivity
control.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(13), С. 9241 - 9251
Опубликована: Март 19, 2024
Much
attention
has
been
focused
on
the
catalytic
asymmetric
creation
of
single
chiral
centers
or
two
adjacent
stereocenters.
However,
construction
nonadjacent
stereocenters
is
significant
importance
but
challenging
because
lack
remote
induction
models.
Herein,
based
a
C═C
bond
relay
strategy,
we
report
synergistic
Pd/Cu-catalyzed
1,5-double
model.
All
four
stereoisomers
target
products
bearing
1,5-nonadjacent
involving
both
allenyl
axial
and
central
chirality
could
be
obtained
divergently
by
simply
changing
combination
catalysts
with
different
configurations.
Control
experiments
DFT
calculations
reveal
novel
mechanism
1,5-oxidative
addition,
contra-thermodynamic
η3-allyl
palladium
shift,
conjugate
nucleophilic
substitution,
which
play
crucial
roles
in
control
reactivity,
regio-,
enantio-,
diastereoselectivity.
It
expected
that
this
strategy
may
provide
general
protocol
for
synthesis
structural
motifs
distant
Proceedings of the National Academy of Sciences,
Год журнала:
2022,
Номер
119(31)
Опубликована: Июль 28, 2022
Predicting
electronic
energies,
densities,
and
related
chemical
properties
can
facilitate
the
discovery
of
novel
catalysts,
medicines,
battery
materials.
However,
existing
machine
learning
techniques
are
challenged
by
scarcity
training
data
when
exploring
unknown
spaces.
We
overcome
this
barrier
systematically
incorporating
knowledge
molecular
structure
into
deep
learning.
By
developing
a
physics-inspired
equivariant
neural
network,
we
introduce
method
to
learn
representations
based
on
interactions
among
atomic
orbitals.
Our
method,
OrbNet-Equi,
leverages
efficient
tight-binding
simulations
learned
mappings
recover
high-fidelity
physical
quantities.
OrbNet-Equi
accurately
models
wide
spectrum
target
while
being
several
orders
magnitude
faster
than
density
functional
theory.
Despite
only
using
samples
collected
from
readily
available
small-molecule
libraries,
outperforms
traditional
semiempirical
learning-based
methods
comprehensive
downstream
benchmarks
that
encompass
diverse
main-group
processes.
also
describes
in
challenging
charge-transfer
complexes
open-shell
systems.
anticipate
strategy
presented
here
will
help
expand
opportunities
for
studies
chemistry
materials
science,
where
acquisition
experimental
or
reference
is
costly.
European Journal of Organic Chemistry,
Год журнала:
2022,
Номер
26(1)
Опубликована: Дек. 9, 2022
Abstract
Dual
catalysis
is
one
of
the
most
powerful
strategies
for
development
chemical
reactions
in
organic
synthesis.
This
strategy
can
be
divided
into
cooperative
catalysis,
relay
and
sequential
according
to
actual
mode
operation
communication
between
catalysts.
In
recent
years,
such
has
been
applied
a
large
number
studies
since
it
advantages
of:
1)
increasing
reactivity
enabling
challenging
transformations;
2)
offering
way
controlling
stereoselectivity
asymmetric
reactions,
which
traditional
catalytic
systems;
3)
catalyze
stereodivergent
synthesis
molecules
bearing
or
more
stereocenters
from
same
starting
materials.
Perspective,
intends
introduce
reader
EurJOC
special
collection
on
Catalysis
,
aims
summarize
different
categories
dual
demonstrate
their
benefits
constructing
new
bonds
selective
manner.
Finally,
current
challenges
trends
will
also
presented.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(10)
Опубликована: Янв. 4, 2023
Herein,
we
report
a
synthesis
of
cyclohexanones
bearing
multi-continuous
stereocenters
by
combining
copper-catalyzed
asymmetric
conjugate
addition
dialkylzinc
reagents
to
cyclic
enones
with
iridium-catalyzed
allylic
substitution
reaction.
Good
excellent
yields,
diastereoselectivity
and
enantioselectivity
can
be
obtained.
Unlike
the
stereodivergent
construction
adjacent
(1,2-position)
reported
in
literature,
current
reaction
achieve
nonadjacent
(1,3-position)
proper
combination
two
chiral
catalysts
different
enantiomers.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(12)
Опубликована: Дек. 5, 2023
London
dispersion
(LD)
interactions
are
the
main
contribution
of
attractive
part
van
der
Waals
potential.
Even
though
LD
effects
driving
force
for
molecular
aggregation
and
recognition,
role
these
omnipresent
in
structure
reactivity
had
been
largely
underappreciated
over
decades.
However,
recent
years
considerable
efforts
have
made
to
thoroughly
study
their
potential
as
a
chemical
design
element
structures
catalysis.
This
was
possible
through
fruitful
interplay
theory
experiment.
review
highlights
results
advances
utilizing
structural
motif
understand
utilize
intra-
intermolecularly
LD-stabilized
systems.
Additionally,
we
focus
on
quantification
fundamental
reactions.