Advanced Synthesis & Catalysis,
Год журнала:
2019,
Номер
361(8), С. 1808 - 1814
Опубликована: Март 8, 2019
Abstract
A
simple
and
catalyst‐free
strategy
was
developed
for
the
synthesis
of
unsymmetrical
thiosulfonates
using
readily
available
DABCO⋅(SO
2
)
as
a
solid
bench‐stable
sulfur
dioxide
surrogate.
The
corresponding
were
obtained
through
radical
pathway
with
good
functional
group
tolerance.
This
offers
promising
method
construction
diverse
useful
in
field
synthetic
pharmaceutical
chemistry
extends
number
still
limited
fixation
strategies.
magnified
image
Organic & Biomolecular Chemistry,
Год журнала:
2020,
Номер
19(2), С. 313 - 321
Опубликована: Ноя. 19, 2020
1,3-Dicyano-2,4,5,6-tetrakis(diphenylamino)-benzene
has
emerged
as
a
powerful
and
attractive
metal-free
organophotocatalyst
for
organic
transformation
is
expected
to
contribute
great
extent
toward
the
advancement
development
of
synthetic
methodologies.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2018,
Номер
7(1), С. 1574 - 1579
Опубликована: Дек. 4, 2018
An
eco-friendly
and
practical
method
for
the
ultrasonic
multicomponent
synthesis
of
diverse
(Z)-β-iodo
vinylthiocyanates
from
cheap
commercially
available
alkynes,
molecular
iodine,
KSCN
through
an
intermolecular
H-bonding
assistance
strategy
was
developed.
Green Chemistry,
Год журнала:
2020,
Номер
22(7), С. 2288 - 2300
Опубликована: Янв. 1, 2020
Substituted
pyrrolidine
derivatives
are
obtained
via
regio-
and
chemoselective
5-exo-dig
radical
cyclization
of
unactivated
1,6-enynes
with
chalcogens
under
metal-
oxidant-free
conditions.
Advanced Synthesis & Catalysis,
Год журнала:
2020,
Номер
362(13), С. 2609 - 2614
Опубликована: Май 1, 2020
Abstract
With
ethylene
glycol
as
a
green
solvent,
general
transition
metal‐free
photocatalytic
system
using
9‐mesityl‐10‐methylacridinium
perchlorate
(Acr
+
−Mes
⋅
ClO
4
−
)
catalyst
was
developed
for
the
synthesis
of
sulfone‐containing
heterocycles
including
thioflavones,
oxindoles,
and
quinoline‐2,4(1
H
,3
)‐diones
through
cascade
sulfonation/cyclization
reactions
under
irradiation
blue
light
at
room
temperature.
magnified
image
Accounts of Chemical Research,
Год журнала:
2020,
Номер
53(4), С. 782 - 791
Опубликована: Март 9, 2020
ConspectusOver
the
past
decade,
photoredox
catalysis
has
blossomed
as
a
powerful
methodology
because
of
its
wide
applicability
in
sustainable
free-radical-mediated
processes,
which
light
is
used
cleaner
energy
source
to
alter
redox
properties
organic
molecules
and
drive
unique
chemical
transformations.
Numerous
examples
highly
selective
C-C
C-heteroatom
bond
formation
processes
have
been
achieved
this
way
an
efficient
waste-reducing
way.
Therein,
activation
widely
available
halides
via
single-electron
reduction
broadly
applied
for
synthesis.
However,
comparison
with
alkyl
aryl
halides,
analogous
utilization
vinyl
less
developed,
most
likely
consequence
unstable
radicals
generated
intermediates
along
their
strong
tendency
abstract
hydrogen
atoms
from
suitable
(e.g.,
solvent),
resulting
synthetically
useful
reduction.Nevertheless,
during
last
years,
number
photocatalytic
involving
featuring
generation
radicals,
diradicals,
or
radical
cations
key
transient
species.
Moreover,
reacts
halide
situ-generated
vinylmetal
developed.
Thus,
identifying
conditions
generate
manipulate
these
reactive
species
resulted
novel
synthetic
controllable
manner.
view
great
versatility
palladium-catalyzed
cross-coupling
reactions,
by
visible
might
provide
attractive
alternative
such
especially
when
non-noble
metals
could
be
photoinitiators
future.In
Account,
we
discuss
various
strategies
classifying
material
into
four
categories:
(a)
upon
receipt
electron
photocatalyst,
(b)
cation
after
donation
(c)
transfer
corresponding
diradical
triplet-triplet
sensitization,
(d)
dual
transition
metal
photocatalysis
employing
precursors.
While
first
three
approaches
part
photochemical
step,
fourth
one
involves
interaction
photochemically
vinylnickel(II)
obtained
turn
oxidative
addition
nickel(0)
halide.
Therefore,
highlight
important
developments
conceptual
direct
light,
but
they
are
not
covered
depth
Account.
The Journal of Organic Chemistry,
Год журнала:
2021,
Номер
86(13), С. 9055 - 9066
Опубликована: Июнь 23, 2021
A
visible-light-induced
decarboxylation
reaction
was
developed
for
the
synthesis
of
alkylated
benzimidazo[2,1-a]isoquinoline-6(5H)-ones
and
indolo[2,1-a]isoquinolin-6(5H)-ones
under
metal-free
conditions.
Impressively,
metal
catalysts
traditionally
volatile
organic
solvents
could
be
effectively
avoided.
European Journal of Organic Chemistry,
Год журнала:
2022,
Номер
2022(20)
Опубликована: Май 3, 2022
Abstract
Dual
photoredox
and
cobalt
catalysis
opens
a
new
exciting
avenue
for
transition
metal
catalyzed
cross‐coupling
reaction.
The
ability
of
this
approach
to
access
low
valent
species
gives
enormous
opportunity
develop
reactions
that
relies
on
stoichiometric
methods.
In
mini
review,
we
have
compiled
the
most
recent
development
dual
catalytic
system
with
particular
attention
paid
mechanistic
details
substrate
scope.
We
hope
review
will
be
useful
synthetic
organic
chemists
further
stimulate
advancement
more
novel
strategies.
Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
366(6), С. 1220 - 1268
Опубликована: Янв. 22, 2024
Abstract
Elaborated
molecular
architectures,
specifically
those
bearing
one
or
more
carbon
stereocenters,
stand
as
an
important
class
of
carbocyclic
and
heterocyclic
frameworks
because
they
are
frequently
occurring
core
structures
in
numerous
natural
products
biologically
active
pharmaceutical
molecules.
Over
the
past
few
decades,
development
versatile
synthetic
approaches
via
cascade
cyclization
reactions
1,6‐enynes
for
construction
a
series
fused
spiro
compounds
has
been
focus
great
deal
research
initiatives.
These
synthesis
strategies
peculiarly
fascinating
context
assembly
wide
array
molecules,
products,
agrochemicals,
functional
materials.
In
this
review,
recent
developments
transformations
with
diverse
coupling
reagents
summarized
since
2018,
which
could
be
divided
into
five
categories:
1)
Introduction;
2)
Transition
metal
catalyzed
1,6‐enynes;
3)
Metal‐free
4)
Visible‐light‐induced
5)
Electrocatalytic
1,6‐enynes.
