Photocatalytic Pyridyl-carbamoylation of Alkenes for Accessing β-Pyridyl Amides
Jian Cui,
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Zhikai Li,
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Yun Mao
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et al.
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 7, 2025
The
β-pyridyl
amide
is
a
critical
scaffold
in
medical
discovery
yet
lacks
efficient
synthetic
methods.
Here,
we
describe,
for
the
first
time,
visible-light-induced,
redox-neutral
radical
cross-coupling
reaction
involving
alkenes,
oxamic
acids,
and
cyanopyridines
that
offers
versatile
assembly
of
β-pyridylamides.
This
approach
features
mild
conditions,
high
step
efficiency,
substrate
breadth,
providing
green
strategy
alkene
pyridyl-carbamoylation.
Achieving
this
transformation
relies
on
catalytic
system,
which
adeptly
avoids
competing
nucleophilic
carbamoyl
with
electrophilic
pyridyl
radical,
enabling
three-component
tandem
process
chemoselectivity.
Language: Английский
Synthesis and modification of carbohydrates using metallaphotoredox catalysis and photoexcited-state transition metal catalysis
Jing Wang,
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Fan Zhou,
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Yu‐Ping Xu
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et al.
Sustainable Chemistry and Pharmacy,
Journal Year:
2024,
Volume and Issue:
43, P. 101855 - 101855
Published: Dec. 4, 2024
Language: Английский
Organometallic Photocatalyst‐Promoted Synthesis and Modification of Carbohydrates under Photoirradiation
Jing Wang,
No information about this author
Fan Zhou,
No information about this author
Yu‐Ping Xu
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et al.
The Chemical Record,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 27, 2024
Carbohydrates
are
natural,
renewable,
chemical
compounds
that
play
crucial
roles
in
biological
systems.
Thus,
efficient
and
stereoselective
glycosylation
is
an
urgent
task
for
the
preparation
of
pure
structurally
well-defined
carbohydrates.
Photoredox
catalysis
has
emerged
as
a
powerful
tool
carbohydrate
chemistry,
providing
alternative
addressing
some
challenges
glycochemistry.
Over
last
few
decades,
Ir-
Ru-based
organometallic
photocatalysts
have
attracted
significant
interest
because
their
high
stability,
high-energy
triplet
state,
strong
visible-light
absorption,
long
luminescence
lifetime,
amenability
to
ligand
modification.
This
review
highlights
recent
progress
photocatalyst-promoted
synthesis
modification
carbohydrates
under
photoirradiation,
well
related
benefits
drawbacks.
Language: Английский