Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Dec. 10, 2024
Platform
chemicals
obtained
from
biomass
will
play
an
important
role
in
chemical
industry.
Already
existing
compounds
or
not
yet
established
are
produced
this
renewable
feedstock.
Using
photochemical
reactions
as
sustainable
method
for
the
conversion
of
matter
furthermore
permits
to
develop
processes
that
interesting
ecological
and
economical
point
view.
Furans
levoglucosenone
thus
carbohydrate
containing
biomass.
Photochemical
rearrangements,
photooxygenation
photocatalytic
radical
can
be
carried
out
with
such
compounds.
Also,
sugars
pentoses
hexoses
more
easily
transformed
into
heterocyclic
target
when
used.
Lignin
is
source
aromatic
vanillin.
Photocycloaddition
these
alkenes
use
light
supported
multicomponent
yield
molecules.
Dyes,
surfactants
possessing
a
high
degree
molecular
diversity
complexity
have
been
synthesized
key
steps.
Alkenes
platform
also
by
fermentation
processes,
example,
cyanobacteria
using
biological
photosynthesis.
Such
well
terpenes
may
further
yielding,
precursors
jet
fuels.
Organic Letters,
Journal Year:
2024,
Volume and Issue:
26(27), P. 5752 - 5757
Published: July 1, 2024
A
new
self-cyclopropanation
of
1,3-diphenylpropane-1,3-dione,
leading
to
tetrasubstituted
cyclopropane
containing
three
contiguous
stereogenic
centers
with
high
stereoselectivity,
has
been
achieved
through
violet-light-emitting
diode-irradiated
photocatalysis,
featuring
both
cycloaddition
and
a
distinctive
rearrangement.
Diverging
from
conventional
cyclopropanation
pathways,
this
reaction
yields
unprecedented
rearrangement
cascade
reactions.
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 27, 2024
Abstract
This
paper
highlights
the
latest
advancements
in
asymmetric
alkylative
difunctionalization
of
carbon–carbon
double
bonds
by
utilizing
aliphatic
C─H
substrates
as
alkyl
radical
precursors.
By
integrating
different
hydrogen
atom
transfer
(HAT)
processes
with
various
transition
metal
catalytic
systems,
alkane
can
be
efficiently
converted
into
corresponding
radicals,
which
then
participate
additions
to
followed
stereoselective
functionalizations
a
third
component.
These
strategies
leverage
inexpensive,
abundant,
and
readily
available
feedstocks
rapidly
construct
complex
chiral
molecules,
demonstrating
high
step
economy.
focuses
on
recent
progress
applications
this
area,
provides
comprehensive
perspective
current
developments,
suggests
future
directions
alkane‐involved
transformations.
Synlett,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 7, 2024
Abstract
Epoxidation
of
α,β-unsaturated
ketones
under
visible-light
irradiation
constitutes
a
significant
chemical
transformation
with
potential
applications
in
the
synthesis
epoxypropane
derivatives.
An
organophotoredox
catalytic
system
is
herein
reported
to
facilitate
efficient
aerobic
epoxidation.
This
protocol
enables
conversion
into
their
corresponding
epoxy
products
moderate
high
yields
benign
reaction
conditions.
The
methodology
demonstrates
broad
functional-group
compatibility,
providing
reliable
and
direct
route
variety
functionalized
compounds.
Additionally,
absence
heavy
metals
this
strategy
renders
it
particularly
suitable
for
pharmaceutical
industry,
offering
new
avenue
epichlorohydrin
drugs.
Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Dec. 10, 2024
Platform
chemicals
obtained
from
biomass
will
play
an
important
role
in
chemical
industry.
Already
existing
compounds
or
not
yet
established
are
produced
this
renewable
feedstock.
Using
photochemical
reactions
as
sustainable
method
for
the
conversion
of
matter
furthermore
permits
to
develop
processes
that
interesting
ecological
and
economical
point
view.
Furans
levoglucosenone
thus
carbohydrate
containing
biomass.
Photochemical
rearrangements,
photooxygenation
photocatalytic
radical
can
be
carried
out
with
such
compounds.
Also,
sugars
pentoses
hexoses
more
easily
transformed
into
heterocyclic
target
when
used.
Lignin
is
source
aromatic
vanillin.
Photocycloaddition
these
alkenes
use
light
supported
multicomponent
yield
molecules.
Dyes,
surfactants
possessing
a
high
degree
molecular
diversity
complexity
have
been
synthesized
key
steps.
Alkenes
platform
also
by
fermentation
processes,
example,
cyanobacteria
using
biological
photosynthesis.
Such
well
terpenes
may
further
yielding,
precursors
jet
fuels.
