Visible-light-mediated selenocyclization of o-vinylanilides with diselenides
Organic & Biomolecular Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
visible-light-induced
selenocyclization
of
o
-vinylanilides
with
diselenides
using
molecular
oxygen
as
a
terminal
oxidant
has
been
developed.
Язык: Английский
Electrosynthesis of Benzimidazole-Fused Quinazolinones via a Cascade Addition-Desulfurization-Cyclization Process
Tetrahedron Green Chem,
Год журнала:
2025,
Номер
5, С. 100068 - 100068
Опубликована: Фев. 7, 2025
Eco-Friendly and Efficient Synthesis of 2-Hydroxy-3-Hydrazono-Chromones Through α,β-C(sp2)–H Bond Difunctionalization/Chromone Annulation Reaction of o-Hydroxyaryl Enaminones, Water, and Aryldiazonium Salts
Molecules,
Год журнала:
2025,
Номер
30(6), С. 1194 - 1194
Опубликована: Март 7, 2025
A
novel,
eco-friendly,
and
efficient
method
for
constructing
2,3-disubstituted
chromone
skeletons
from
readily
available
water,
o-hydroxyaryl
enaminones
(o-HPEs),
aryldiazonium
salts
has
been
developed
under
mild
reaction
conditions.
This
α,β-C(sp2)–H
bond
difunctionalization/chromone
annulation
strategy
is
achieved
by
building
two
C(sp3)–O
bonds
a
C(sp2)-N
bond,
which
provides
practical
pathway
the
preparation
of
2-hydroxy-3-hydrazono-chromones
in
moderate
to
excellent
yields,
enabling
broad
substrate
scope
good
functional
group
tolerance,
as
well
gram-scale
synthesis.
protocol
offers
valuable
tool
synthesizing
diverse
functionalized
chromones
with
potential
applications
drug
discovery
industrial
Язык: Английский
An update on the advances in chromone and the derivatives synthesis based on the key chromone annulation of o-hydroxyaryl enaminones
Chinese Chemical Letters,
Год журнала:
2024,
Номер
unknown, С. 110784 - 110784
Опубликована: Дек. 1, 2024
Язык: Английский
Selenylation of N‐(P‐Methoxyaryl)Propiolamides via CuBr2 Catalysis: Synthesis of 3‐Selenospiro[4,5]Decatrienones via Ipso‐Cyclization
ChemCatChem,
Год журнала:
2024,
Номер
16(20)
Опубликована: Июнь 27, 2024
Abstract
Herein,
a
method
for
the
assembly
of
biologically
valuable
3‐selenospiro[4,5]decatrienones
through
CuBr
2
‐catalyzed
ispo
‐cyclization
Se
powder,
boronic
acids,
and
N
‐(
p
‐methoxyaryl)propiolamides
has
been
established.
In
this
protocol,
noble
transition
metal,
prefunctionalized
selenylation
reagent,
strong
chemical
oxidant
are
not
employed.
This
feature
wide
substrate
scope,
good
functional
group
tolerance,
easy
operation,
employing
earth‐abundant
metal
as
catalyst
green
air
oxidant.
Furthermore,
several
derivatizations
performed
to
showcase
practicability
our
strategy.
Язык: Английский
Electrochemical Synthesis of 4‐Selenylated Oxazolones via Oxyselenylation of Ynamides
Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 19, 2024
Abstract
Electrosynthesis
of
selenylated‐oxazolone
derivatives
via
cascade
selenylation/cyclization
ynamides
was
disclosed.
A
series
diaryl
diselenides,
dialkyl
and
heteroaryl‐substituted
tolerated
in
this
protocol
delivered
4‐selenyloxazolones
28–83%
yields.
The
scale‐up
reaction
the
oxidation
performed
to
showcase
practicability
method.
Furthermore,
mechanistic
experiments
indicated
that
a
cationic
pathway
instead
radical
probably
involved.
Язык: Английский