Visible light promoted synthesis of allenes
Catalysis Science & Technology,
Год журнала:
2024,
Номер
14(18), С. 5143 - 5160
Опубликована: Янв. 1, 2024
This
review
article
summarizes
the
visible
light
mediated
synthesis
of
allenes
from
substrates
like
1,3-enynes,
propargylic
carbonates,
homopropargylic
alcohols,
oxalates,
alkynyl
diazo
compounds,
and
terminal
aziridines.
Язык: Английский
Metallaphotoredox Synthesis of Axially Chiral Tetrasubstituted Allenes through Regio- and Enantioselective 1,4-Carbocyanation of 1,3-Enynes
Keyi Peng,
Ya-Sheng Cao,
Quanyuan Wang
и другие.
ACS Catalysis,
Год журнала:
2024,
Номер
14(18), С. 14048 - 14057
Опубликована: Сен. 10, 2024
Язык: Английский
Copper-Catalyzed Enantioselective Radical Cyanation of Allenic C(sp2)–H Bonds to Access Tri- and Tetrasubstituted Chiral Allenes
ACS Catalysis,
Год журнала:
2025,
Номер
unknown, С. 7741 - 7748
Опубликована: Апрель 25, 2025
Язык: Английский
Nickel-Catalyzed Reductive 1,4-Alkylacylation of 1,3-Enynes Enabling Synthesis of Allenyl Ketones
Quanyuan Wang,
Keyi Peng,
Xupei Yao
и другие.
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 21, 2025
A
nickel-catalyzed
reductive
1,4-alkylacylation
of
1,3-enynes
has
been
established
using
nonactivated
tertiary
alkyl
bromides
and
aromatic
anhydrides
as
dual
electrophiles.
This
protocol
enables
efficient
assembly
tetrasubstituted
allenyl
ketones
with
high
chemo-
regioselectivity.
Mechanistic
insights
reveal
the
radical
relay
process
involving
synergistic
interactions
nickel
zinc.
The
ketone
products
serve
modular
building
blocks,
particularly
for
constructing
fully
carbon-substituted
furans
via
Au-catalyzed
cycloisomerization
selective
1,2-aryl
migration,
enhancing
synthetic
practicality.
Язык: Английский
Dual Photoredox/Copper-Catalyzed Three-Component Alkylcyanation of Alkenes and 1,4-Alkylcyanation of 1,3-Enynes Employing Sulfoxonium Ylides as the Carbon Radical Precursors
Organic Letters,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 3, 2024
A
novel
dual
photoredox/copper-catalyzed
three-component
alkylcyanation
of
alkenes
and
1,4-alkylcyanation
1,3-enynes
have
been
developed.
In
this
radical
cyanoalkylation
reaction,
the
photoredox
induced
alkyl
from
sulfoxonium
ylides
adds
to
carbon-carbon
double
bonds
styrenes
or
1,3-enynes,
generated
benzylic
allenyl
radicals
couple
with
a
Cu(II)
cyanide
complex
achieve
selective
cyanation.
The
reaction
exhibits
high
chemo-
regioselectivity
wide
substrate
scope,
providing
an
efficient
method
for
synthesis
nitriles
in
single
step.
Язык: Английский