Chinese Journal of Chemistry,
Год журнала:
2021,
Номер
39(9), С. 2489 - 2494
Опубликована: Май 9, 2021
Main
observation
and
conclusion
Divergent
synthesis
of
useful
skeletons
has
been
realized
via
rhodium(III)‐catalyzed
C—H
activation
iminopyridinium
ylides
coupling
with
various
unsaturated
reagents.
Isocoumarins
isoquinolones
were
obtained
cleavage
the
C—N
or
N—N
bond
in
ylidic
directing
group,
while
fluorinated
alkenes
delivered
group
intact.
The
reactions
occurred
wide
substrate
scopes
good
efficiency
under
redox‐neutral
air‐tolerant
conditions.
Representative
products
exhibit
solid‐state
fluorescent
property
bioactivity
inhibition
toward
human
cancer
cells.
Organic & Biomolecular Chemistry,
Год журнала:
2020,
Номер
18(43), С. 8793 - 8809
Опубликована: Янв. 1, 2020
Sulfur
ylides
first
disclosed
in
1930
started
to
gain
more
attention
the
1960s,
thanks
mainly
studies
by
Corey
and
Chaykovsky
on
their
use
for
preparation
of
strained
rings.
More
recently,
chemistry
these
compounds
has
experienced
important
growth,
part
due
similarity
reactivities
with
diazo
compounds.
This
short
review
provides
an
overview
great
assortment
reactions
sulfoxonium
ylides,
outlining
a
comparison
between
congeners:
sulfonium
Insertion
reactions,
cyclisation
ring-opening
are
highlighted,
giving
particular
catalytic
asymmetric
methodologies.
Asian Journal of Organic Chemistry,
Год журнала:
2022,
Номер
11(4)
Опубликована: Март 23, 2022
Abstract
In
recent
years,
the
transition‐metal‐catalyzed
functionalization
reactions
of
sulfoxonium
ylides
have
been
explored
extensively
because
their
usefulness
as
carbene‐transfer
agents,
since
they
can
produce
metal
carbenes
through
catalysis.
Moreover,
are
safer
and
advantages
simple
handling
good
stability
over
other
counterparts
like
diazo‐compounds.
This
review
article
attempts
to
highlight
advances
in
metal‐catalyzed
C−H
ylides.
Organic Letters,
Год журнала:
2022,
Номер
24(13), С. 2531 - 2535
Опубликована: Март 30, 2022
Reported
herein
is
the
efficient
and
atroposelective
construction
of
two
categories
C-N
atropisomers
via
rhodium(III)-catalyzed
C-H
activation
sulfoxonium
ylides
en
route
to
[4+2]
annulation
with
sterically
hindered,
electron-rich
alkynes.
This
reaction
proceeds
high
regio-
enantioselectivity
under
redox-neutral
conditions
a
double-substrate
strategy,
providing
novel
entry
axially
chiral
4-functionalized
1-naphthols.
Chemical Communications,
Год журнала:
2019,
Номер
56(3), С. 423 - 426
Опубликована: Дек. 4, 2019
Iridium-catalyzed
boron-hydrogen
bond
insertion
reactions
of
trimethylamine-borane
and
sulfoxonium
ylides
have
been
demonstrated,
furnishing
α-boryl
ketones
in
moderate
to
excellent
yields
most
cases
(51
examples;
up
84%).
This
practical
scalable
reaction
showed
broad
substrate
scope,
high
functional-group
compatibility
could
be
applied
late-stage
modification
structurally
complex
drug
compounds.
Further
synthetic
applications
were
also
demonstrated.
Organic Letters,
Год журнала:
2020,
Номер
22(4), С. 1504 - 1509
Опубликована: Фев. 11, 2020
An
unprecedented
copper-catalyzed
reaction
of
sulfoxonium
ylides
and
anthranils
is
reported
that
enables
an
easy
access
to
2,3-diaroylquinolines
through
a
[4+1+1]
annulation.
Copper-catalyzed
homocoupling
provided
α,α,β-tricarbonyl
ylides,
which
provides
strategy
extend
the
carbon
chain
C–C
bond
formation.
The
utility
products
as
well
mechanistic
details
process
are
presented.
Organic Letters,
Год журнала:
2019,
Номер
21(22), С. 9217 - 9222
Опубликована: Ноя. 5, 2019
Rhodium(III)-catalyzed
annulative
coupling
of
sulfoxonium
ylides
with
allenoates
was
achieved,
forming
highly
functionalized
cyclopropanes
a
quaternary
carbon
center
by
means
the
ylide
functionality
as
traceless
bifunctional
directing
group
and
C4
synthon
via
an
arene
C–H
activation
cyclopropanation
cascade.
The
protocol
features
simultaneous
formation
three
new
C–C
bonds
in
one
pot
excellent
diastereoselectivity.
resultant
products
could
be
further
transformed
to
diverse
synthetically
useful
compounds.
Organic Letters,
Год журнала:
2020,
Номер
22(12), С. 4806 - 4811
Опубликована: Июнь 1, 2020
Site-selective
direct
functionalization
of
an
indole
benzenoid
core
has
been
a
great
challenge
due
to
its
inherently
poor
reactivity.
We
herein
demonstrate
iridium-catalyzed
C4-selective
acylmethylation
indoles
using
α-carbonyl
sulfoxonium
ylides
as
carbene
precursors.
This
method
exhibits
high
efficiency
and
broad
functional
group
compatibility.
The
directing
was
easily
removed
or
converted
other
functionalities
after
the
catalysis.
potential
synthetic
utility
coupling
products
highlighted
by
constructing
medium-sized
polycyclic
indoles.
Organic Letters,
Год журнала:
2020,
Номер
22(4), С. 1375 - 1379
Опубликована: Фев. 3, 2020
The
synthesis
of
indanone
derivatives
by
the
Rh(III)-catalyzed
reaction
α-carbonyl
sulfoxonium
ylides
with
activated
alkenes
is
reported.
shows
a
high
tolerance
for
functional
groups
and
furnishes
variety
substituted
via
formal
[4
+
1]
cycloaddition.
Highly
stable
were
used
as
substrates
in
this
C-H
functionalization,
their
bifunctional
character
could
be
effectively
exploited
using
Rh(III)
catalysis
sequential
double
C-C
bond
formation.
Based
on
mechanistic
studies
including
deuterium-labeling
experiments,
proposed
to
proceed
follows:
oxidative
alkenylation
β-hydride
elimination,
readdition
H-Rh
species,
1,2-carbon
shift
elimination
DMSO,
protonation.
Organic Chemistry Frontiers,
Год журнала:
2020,
Номер
7(9), С. 1177 - 1196
Опубликована: Янв. 1, 2020
This
review
article
provides
an
overview
of
the
recent
progress
in
transformations
anthranils,
which
have
emerged
as
versatile
building
blocks
assembly
various
C–N
bonds
and
medicinally
active
heterocyclic
systems.
