Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(60), P. 7741 - 7744
Published: Jan. 1, 2024
A
mild
hydroazidation
of
trifluoromethyl
alkenes
with
trimethylsilyl
azide
through
organic
photoredox
catalysis
was
developed,
delivering
a
series
valuable
β-CF
3
-azides
exclusive
selectivity.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(12)
Published: Jan. 17, 2024
Abstract
The
transient
electron
donor–acceptor
(EDA)
complex
has
been
an
emerging
area
in
the
photoinduced
organic
synthesis
field,
generating
radicals
without
exogenous
transition‐metal
or
dye‐based
photoredox
catalysts.
catalytic
platform
to
form
suitable
photoactive
EDA
complexes
for
photochemical
reduction
reactions
remains
underdeveloped.
Herein,
a
general
reductive
alkylation
via
strategy
is
described.
A
simple
yet
multifunctional
system,
triphenylphosphine
and
iodide
salt,
promotes
decarboxylative
hydroalkylation,
defluorinative
of
trifluoromethyl
alkenes,
access
alkanes
gem
‐difluoroalkenes.
Moreover,
hydroalkylation
can
be
applied
more
kinds
electron‐deficient
alkenes
as
Giese
addition
reaction.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 28, 2024
The
fluoroalkyl-containing
organic
molecules
are
widely
used
in
drug
discovery
and
material
science.
Herein,
we
report
ligand
regulated
nickel(0)-catalyzed
regiodivergent
hydrosilylation
of
α-(fluoroalkyl)styrenes
without
defluorination,
providing
an
atom-
step-economical
synthesis
route
two
types
fluoroalkyl
substituted
silanes
with
exclusive
regioselectivity.
anti-Markovnikov
addition
products
(β-fluoroalkyl
silanes)
formed
monodentate
phosphine
ligand.
Noteworthy,
the
bidentate
promote
generation
more
challenging
Markovnikov
(α-fluoroalkyl
tetrasubstituted
saturated
carbon
centers.
This
protocol
features
easy
available
starting
materials
commercially
nickel
catalysis,
a
wide
range
substrates
excellent
structure
divergent
undergo
variety
transformations.
Comprehensive
mechanistic
studies
including
inverse
kinetic
isotope
effects
demonstrate
regioselectivity
controlled
by
through
α-CF3
intermediate.
DFT
calculations
reveal
distinctive
mechanism
involving
open-shell
singlet
state,
which
is
crucial
for
generating
intricate
tetra-substituted
products.
authors
defluorination.
Organic Letters,
Journal Year:
2023,
Volume and Issue:
25(8), P. 1336 - 1341
Published: Feb. 23, 2023
A
concise
Fe-catalyzed
alkylazidation
of
α-trifluoromethylalkenes
via
a
C–C
bond
cleavage/radical
addition/azidation
cascade
is
described.
This
protocol
features
broad
substrate
scope,
excellent
functional
group
compatibility,
and
the
ability
to
be
performed
on
gram
scale,
thus
offering
practical
step-economic
approach
synthetically
useful
tertiary
α-trifluoromethyl
azides.
Chinese Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
41(15), P. 1783 - 1790
Published: April 10, 2023
Comprehensive
Summary
Alcohols
as
among
the
most
widely
occurring
organic
compounds
known,
deoxygenative
transformations
of
free
alcohols
partners
in
radical
addition
reactions
remain
formidable
challenges
with
great
opportunities
to
achieve
new
and
useful
transformations.
Herein,
we
report
a
protocol
via
C—O
bond
cleavage
C—C
bond‐forming
reaction
trifluoromethyl
alkenes
assisted
by
titanium
reagents
strategy,
enabling
divergent
synthesis
for
functional‐group‐rich
organofluorinated
high
efficiencies.
In
this
transformation,
tertiary
Ti‐catalysis
could
be
converted
alkanes
without
defluorination
acidic
conditions,
while
benzyl
are
employed
Ti‐mediated
activation
supply
gem
‐difluoroalkenes
presence
base.
This
is
applicable
broad
range
good
functional
group
tolerance
variety
(including
primary,
secondary,
alcohols),
scalable
gram
level.
Remarkably,
utility
demonstrated
several
derivatizations
late‐stage
functionalization
drug
molecules.
The
successful
applications
scale
up
molecules
demonstrate
its
potential
synthetic
value
discovery
settings.
Chemical Communications,
Journal Year:
2022,
Volume and Issue:
58(100), P. 13915 - 13918
Published: Jan. 1, 2022
Herein
we
reported
the
use
of
Earth-abundant
iron
as
catalytic
metal
in
presence
Mn
to
induce
difluorobromoacetates
form
carbon
radicals,
which
reacted
with
trifluoromethyl
olefins
followed
by
β-F
elimination
generate
corresponding
gem-difluoroolefins.
The
cross-electrophile
coupling
displayed
excellent
functional
group
tolerance
and
broad
substrate
scope
under
mild
reductive
conditions,
affording
a
large
number
polyfluorinated
compounds,
could
be
further
transformed
other
valuable
molecules.
Chemistry - An Asian Journal,
Journal Year:
2023,
Volume and Issue:
18(10)
Published: April 8, 2023
Abstract
A
novel
and
facile
method
for
the
synthesis
of
N
‐β‐CF
3
‐substituted
2‐pyridones
via
hydroamination
α‐(trifluoromethyl)styrenes
with
was
described.
The
reaction
proceeded
smoothly
at
room
temperature,
affording
a
variety
‐(β‐trifluoromethyl‐β‐arylethyl)pyridin‐2(1
H
)‐ones
in
moderate
to
good
yields
excellent
‐regioselectivity.