SNAr or Sulfonylation? Chemoselective Amination of Halo(het)arene Sulfonyl Halides for Synthetic Applications and Ultralarge Compound Library Design
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(5), С. 3161 - 3183
Опубликована: Фев. 21, 2024
The
chemoselectivity
of
halo(het)arene
sulfonyl
halide
aminations
is
studied
thoroughly
under
parallel
synthesis
conditions,
and
the
scope
limitations
method
are
established.
It
shown
that
SNAr-reactive
halides
typically
undergo
sulfonamide
during
first
step;
second
amination
also
possible
provided
SNAr-active
center
sufficiently
reactive.
On
contrary,
fluorides
bearing
an
arylating
moiety
selective
transformation
at
latter
reactive
proper
control.
Further
sulfur–fluoride
exchange
(SuFEx)
possible,
which
can
be
especially
valuable
for
some
classes.
developed
two-step
double
protocol
provides
access
to
a
6.67-billion
compound
synthetically
tractable
REAL-type
chemical
space
(76%
expected
success
rate).
Язык: Английский
SNAr or Sulfonylation? Chemoselective Amination of Halo(het)arene Sulfonyl Halides for Synthetic Applications and Ultralarge Compound Library Design
Опубликована: Ноя. 15, 2023
The
chemoselectivity
of
halo(het)arene
sulfonyl
halide
aminations
is
studied
thoroughly
under
parallel
synthesis
conditions,
and
the
scope
limitations
method
are
established.
It
shown
that
SNAr-reactive
halides
typically
undergo
sulfonamide
at
first
step;
second
amination
also
possible
provided
SNAr-active
center
has
sufficient
reactivity.
On
contrary,
fluorides
bearing
an
arylating
moiety
selective
transformation
latter
reactive
proper
temperature
control.
Further
sulfur-fluoride
exchange
(SuFEx)
reaction
possible,
which
can
be
especially
valuable
for
some
classes.
developed
two-step
double
protocol
provides
access
to
a
7-Bln
synthetically
tractable
REAL-type
chemical
space
(nearly
70%
expected
success
rate).
Язык: Английский
Chemistry in Ukraine
The Chemical Record,
Год журнала:
2024,
Номер
24(2)
Опубликована: Янв. 29, 2024
Abstract
In
this
special
issue,
we
highlight
recent
advances
in
chemical
research
by
scientists
Ukraine,
as
well
their
compatriots
and
collaborators
outside
the
country.
Besides
spotlighting
contributions,
see
our
task
fostering
global
partnerships
multi‐,
inter‐,
trans‐disciplinary
collaborations,
including
much‐needed
co‐funded
projects
initiatives.
The
three
decades
of
renewed
Ukraine
independence
have
seen
rather
limited
integration
Ukrainian
(chemical)
science
into
communities.
[1]
At
same
time,
surge
collaborative
initiatives
between
European
Union
(EU)
echoes
unfolding
steps
towards
Ukraine's
full
participation
to
Horizon
Europe
Program.
This
recently
implemented
step
opens
enormous
possibilities
for
researchers
apply
diverse
EU
grants.
Moreover,
a
number
journal
issues
collections
were
launched
chemistry
(i.
e.,
Chemistry
Heterocyclic
Compounds
[2]
ChemistrySelect
[3]
).
Other
scientific
include
‘European
School
Ukrainians’
[4]
‘Kharkiv
Chemical
Seminar’
[5]
voluntary
aimed
at
engaging
international
research.
Язык: Английский
Effect of the Position of the Substituent in the Electrochemical Reduction of Nitro-Substituted Benzenesulfonyl Chlorides
Michael A. Saley,
Emad M. Hamed,
Abdelaziz Houmam
и другие.
Canadian Journal of Chemistry,
Год журнала:
2024,
Номер
102(11), С. 761 - 771
Опубликована: Июль 11, 2024
The
electrochemical
reduction
of
a
series
nitro-substituted
benzenesulfonyl
chlorides
is
investigated.
results
the
study
are
analysed
with
assistance
theoretical
calculations.
shows
that
electron
transfer
mechanism
depends
on
position
nitro
substituent
phenyl
ring.
3-nitrobenzenesulfonyl
chloride
follows
stepwise
where
leads
to
an
intermediate
radical
anion.
For
4-nitrobenzenesulfonyl
chloride,
2-nitrobenzenesulfonyl
and
2,4-nitrobenzenesulfonyl
“sticky”
dissociative
mechanism,
S–Cl
bond
cleavage
concerted.
dissociation
products
(arylsulfinyl
anion)
show
strong
interactions.
difference
in
behaviour
associated
overlap
π
*
orbital
σ
for
latter
three
compounds.
through
resonance
stability
arylsulfinyl
radicals
para
ortho
compounds
facilitates
reduced
structures.
Upon
reduction,
also
produce
corresponding
diaryl
disulfones,
which
easier
reduce
parent
molecules
hence
induce
interesting
autocatalytic
mechanism.
Such
concentration
scan
rate,
does
not
take
place
2,4-dinitrobenzenesulfonyl
due
sterical
hindrance
at
position,
as
it
prevents
formation
disulfones.
Язык: Английский
Saturated Heterocyclic Sulfamoyl Fluorides: Building Blocks for the SuFEx Chemistry
European Journal of Organic Chemistry,
Год журнала:
2024,
Номер
27(42)
Опубликована: Июль 30, 2024
Abstract
A
scalable
protocol
for
direct
SO
2
F
‐based
fluorosulfonylation
of
saturated
(hetero)cyclic
and
functionalized
amines
is
reported.
The
method
cost‐effective
applicable
multigram
preparation
structurally
diverse
compounds,
as
illustrated
by
the
synthesis
58
building
blocks
decorated
with
common
functional
groups.
comparison
overall
yields
products
demonstrates
advantages
present
over
alternative
approaches.
obtained
sp
3
‐enriched
sulfamoyl
fluorides
can
be
considered
a
new
generation
SuFEx
(sulfur
fluoride
exchange)
chemistry.
synthetic
utility
synthesized
was
demonstrated
late‐stage
reactions
tolerating
functionality
well
transformations
to
provide
corresponding
sulfamide,
sulfamate,
sulfonamide
derivatives.
Язык: Английский
Modular Assembly of Heterotrifunctional Molecules Enabled by Iodosulfonylation of Allenes and Subsequent Amination
Journal of Medicinal Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
Beyond
the
rapid
achievements
of
therapeutic
heterobifunctional
molecules,
some
recent
efforts
have
focused
on
constructing
heterotrifunctional
aiming
at
developing
more
potent
and
selective
agents
or
emerging
additional
functions
to
molecules.
However,
synthesis
these
complex
molecules
requires
a
specific
design
lengthy
steps.
We
developed
two-step
strategy
for
modular
construction
enabled
by
sustainable
convenient
iodosulfonylation
allenes
followed
SN2′-selective
amination.
This
successfully
incorporates
broad
range
biologically
active
labeling
them
with
fluorescent
group.
The
applications
obtained
compounds
in
protein
labeling,
subcellular
imaging,
targeted
inhibition
tumor
cells
make
this
highly
appealing.
Язык: Английский