Investigation of the reaction of hexafluoro-1,4-naphthoquinone with substituted phenols
Journal of Fluorine Chemistry,
Journal Year:
2025,
Volume and Issue:
282, P. 110402 - 110402
Published: Feb. 1, 2025
Language: Английский
Light-Driven N-Heterocyclic Carbene-Catalyzed Multi-Component Reaction for the Synthesis of β-Amino Ketones
Chengcheng Shi,
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Nan Zhong,
No information about this author
Lin Guo
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et al.
Organic Letters,
Journal Year:
2024,
Volume and Issue:
26(41), P. 8848 - 8853
Published: Oct. 8, 2024
A
N-heterocyclic
carbene-catalyzed
(NHC)
three-component
reaction
involving
Language: Английский
Synthesis of Substituted N'‐(3,5,6,7,8‐Pentafluoro‐1,4‐Dioxo‐1,4‐Dihydronaphthalen‐2‐yl)Hydrazides by Condensation of Acyl Hydrazines and Perfluoro‐1,4‐Naphthoquinone
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(43)
Published: Nov. 1, 2024
Abstract
The
reaction
of
different
acyl
hydrazines
with
hexafluoro‐1,4‐napthoquinone
was
studied
for
the
first
time.
It
demonstrated
that
this
interaction
stops
at
substitution
one
fluorine
atom
in
quinone
moiety.
Based
on
observed
reaction,
a
general
approach
to
synthesis
pentafluoro‐1,4‐dioxo‐1,4‐dihydronaphthalen‐2‐yl
hydrazides
developed.
revealed
optimal
conditions
condensation
are
reflux
MeOH
0.25
h;
note,
protocol
does
not
require
any
chromatographic
purification
target
products.
method
is
versatile
and
makes
it
possible
prepare
products
containing
various
substituents
aryl
part
molecule.
In
addition,
alkyl
heteroaryl
can
be
employed
as
starting
compounds
too,
presence
hydroxy
cyano
groups
applied
interfere
condensation.
structure
obtained
products,
namely
4‐chloro‐N□‐(3,5,6,7,8‐pentafluoro‐1,4‐dioxo‐1,4‐dihydronaphthalen‐2‐yl)benzohydrazide,
confirmed
by
X‐ray
diffraction.
crystals
hydrazide,
both
NH
form
intermolecular
hydrogen
bonds
give
rise
layers
lying
[001]
plane.
Prepared
N'‐(3,5,6,7,8‐pentafluoro‐1,4‐dioxo‐1,4‐dihydronaphthalen‐2‐yl)hydrazides
interest
redox‐active
ligands
precursors
obtaining
wide
range
functionalized
1,4‐napthoquinones
medicine
chemistry.
Language: Английский
N-heterocyclic carbene-catalyzed nucleophilic aromatic substitution reaction of polyfluoroarenes
Lishuai Lu,
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Dengyu Yin,
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Xiaoxuan Li
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et al.
Synthetic Communications,
Journal Year:
2024,
Volume and Issue:
54(18), P. 1551 - 1563
Published: Aug. 28, 2024
Fluorinated
asymmetric
aryl
ketones
represent
a
pivotal
class
of
organic
synthesis
intermediates,
which
have
garnered
widespread
application
in
the
realms
chemistry,
materials
science,
and
drug
discovery.
Herein,
we
report
pioneering
nucleophilic
aromatic
substitution
(SNAr)
reaction
involving
aldehydes
polyfluoroarenes,
elegantly
catalyzed
by
N-heterocyclic
carbene
(NHC).
This
innovative
strategy
yields
bis(hetero)aryl
ketone
products
ranging
from
moderate
to
exceptional
(40–83%),
all
achieved
under
gentle
conditions,
devoid
both
transition
metals
directing
groups.
The
versatility
this
method
is
underscored
its
compatibility
with
broad
spectrum
substrates,
particularly
exhibiting
remarkable
resilience
toward
alkoxy
functional
Notably,
successfully
transformed
an
array
biologically
active
molecules,
crafting
series
their
corresponding
derivatives
precision.
Language: Английский