Chemical Communications,
Journal Year:
2023,
Volume and Issue:
59(53), P. 8238 - 8241
Published: Jan. 1, 2023
The
triple
ipso-defluoroetherification
of
(trifluoromethyl)alkenes
with
fluoroalkylated
alcohols
by
C(sp3)-F
bond
cleavage
is
reported,
delivering
various
orthoesters
in
high
yields.
This
reaction
transition-metal
free
and
gram-scalable,
features
mild
conditions,
tolerates
diverse
functional
groups.
ChemCatChem,
Journal Year:
2023,
Volume and Issue:
16(8)
Published: Dec. 28, 2023
Abstract
The
selective
C−F
bonds
functionalization
in
available
trifluoromethyl
compounds
is
an
economic
route
for
obtaining
high‐value
organic
fluorine
compounds.
However,
due
to
the
high
dissociation
energy
group,
strength
of
bond
decreases
continuously
during
defluorination,
posing
a
challenge
modifying
such
molecules
without
over‐conversion.
Over
past
few
years,
there
has
been
significant
progress
developing
efficient
methods
constructing
difluoromethylene
unit,
using
approaches
as
radical
chemistry,
photochemistry,
electrochemistry,
and
organometallic
chemistry.
These
involve
difluorocarbon
radicals,
cations,
anions,
carbenes
intermediates.
In
this
review,
we
summarized
recent
five
years
research
achievements
field
single
cleavage
aromatic
carbonyl
gain
diverse
difluoromethylene‐containing
via
different
intermediate
strategies.
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
19(9)
Published: March 16, 2024
A
benign
electrochemical
method
to
access
6-methylphenanthridines
from
2-isocyanobiaryls
using
N,N-dimethylformamide
(DMF)
as
a
methyl
source
is
reported.
The
protocol
operates
at
ambient
temperature
without
the
need
for
harmful
methylating
reagents.
Mechanistic
studies
suggested
that
DMF
delivered
methylene
synthon,
followed
by
reduction
cathode
and
tautomerization.
offers
environmental
benefits
avoiding
metal-based
reagents
harsh
conditions.
Organic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(12), P. 3421 - 3426
Published: Jan. 1, 2024
The
synthesis
of
gem
-difluoro-1,5-dienes
via
regioselective
S
N
2′-type
reactions
alkylidene
malonates
with
trifluoromethyl
alkenes
and
their
subsequent
[2
+
2]
photocycloaddition
for
the
formation
bicyclo[2.1.1]hexanes
are
described.
Chemical Communications,
Journal Year:
2023,
Volume and Issue:
59(53), P. 8238 - 8241
Published: Jan. 1, 2023
The
triple
ipso-defluoroetherification
of
(trifluoromethyl)alkenes
with
fluoroalkylated
alcohols
by
C(sp3)-F
bond
cleavage
is
reported,
delivering
various
orthoesters
in
high
yields.
This
reaction
transition-metal
free
and
gram-scalable,
features
mild
conditions,
tolerates
diverse
functional
groups.