One-Pot Stepwise Dechalcogenization of Trisulfides to Unsymmetrical Dialkyl Thioethers
Jiuwen Xu,
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Ying Chen,
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Weidong Rao
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et al.
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 17, 2025
The
construction
of
C-S
bonds
has
garnered
significant
interest
due
to
the
ubiquitous
presence
organosulfur
compounds
in
natural
products
and
bioactive
molecules.
Herein,
we
report
a
one-pot,
stepwise
desulfuration
strategy
employing
trisulfides
as
precursors
for
synthesis
unsymmetrical
dialkylthioethers.
Our
study
demonstrates
that
copper
powder
facilitates
conversion
into
disulfides,
which
subsequently
undergo
nickel-catalyzed
reductive
coupling
afford
desired
products.
This
approach
provides
practical,
odorless,
broadly
applicable
method
Language: Английский
Metal-catalyzed Thiomethylation of Chloroarenes and Diverse Aryl Electrophiles
Satoshi Toyoda,
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Keiichiro Iizumi,
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Junichiro Yamaguchi
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et al.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
In
this
study,
we
report
the
first
development
of
metal
catalyzed
methylthiolation
chloroarenes
and
diverse
aromatic
electrophiles,
addressing
persistent
challenges
catalyst
intermediate
deactivation
in
functionalization
less
reactive
substrates.
To
overcome
these
issues,
designed
a
novel
anion-shuttle-type
agent,
4-((methylthio)methyl)morpholine,
which
enables
controlled
situ
release
methylthiolate
anions,
thereby
preventing
poisoning
enhancing
reactivity.
This
strategy
allows
efficient
not
only
but
also
broad
range
aryl
including
bromoarenes,
triflates,
tosylates,
pivalates,
nitriles,
carboxylic
acids.
The
developed
system
exhibits
excellent
functional
group
compatibility,
making
it
applicable
to
derivatization
pharmaceuticals
natural
products.
Furthermore,
detailed
mechanistic
investigations
revealed
key
factors
underlying
exceptional
efficiency
providing
new
insights
into
C-S
bond
formation
under
practical
conditions.
Language: Английский