Chemistry - A European Journal,
Год журнала:
2023,
Номер
29(35)
Опубликована: Март 7, 2023
Since
the
pioneer
reports
of
groups
Akiyama
and
Terada
on
Brønsted
acid
organocatalysis,
this
field
never
stopped
growing
with
development
ingenious
strategies
for
activation
challenging
poorly
reactive
substrates.
The
superacidic
organocatalysts
is
an
important
way
to
selectively
functionalize
reluctant
electrophiles
other
approaches
have
also
emerged
such
as
combination
Lewis
acids
well
consecutive
organocatalysis
superacid
activation.
This
Concept
aims
highlight
these
different
demonstrate
their
complementarity.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(9)
Опубликована: Дек. 1, 2023
The
development
of
new
methods
for
enantioselective
reactions
that
generate
stereogenic
centres
within
molecules
are
a
cornerstone
organic
synthesis.
Typically,
metal
catalysts
bearing
chiral
ligands
as
well
organocatalysts
have
been
employed
the
synthesis
compounds.
In
this
review,
we
highlight
recent
advances
in
main
group
catalysis
using
p-block
elements
(boron,
aluminium,
phosphorus,
bismuth)
complementary
and
sustainable
approach
to
molecules.
Several
these
benefit
terms
high
abundance,
low
toxicity,
selectivity,
excellent
reactivity.
This
minireview
summarises
utilisation
element
asymmetric
value-added
Chemical Science,
Год журнала:
2024,
Номер
15(14), С. 5056 - 5060
Опубликована: Янв. 1, 2024
Chemistry
plays
a
central
role
in
science
and
is
the
basis
of
one
major,
more
impactful,
diverse
industries.
However,
to
address
most
pressing
global
challenges,
we
must
learn
create
connections
an
effective
meaningful
way,
with
other
disciplines,
industries,
society
at
large.
Here,
present
IUPAC
Top
Ten
Emerging
Technologies
as
example
initiative
that
highlights
value
promising
advances
chemistry
contributes
creating
accelerate
sustainable
solutions
for
our
planet.
Chemical Reviews,
Год журнала:
2024,
Номер
124(19), С. 10877 - 10923
Опубликована: Сен. 27, 2024
Biocatalysis
has
become
an
important
component
of
modern
organic
chemistry,
presenting
efficient
and
environmentally
friendly
approach
to
synthetic
transformations.
Advances
in
molecular
biology,
computational
modeling,
protein
engineering
have
unlocked
the
full
potential
enzymes
various
industrial
applications.
However,
inherent
limitations
natural
building
blocks
sparked
a
revolutionary
shift.
Abstract
Radical
covalent
catalysis,
namely
radical
catalysis
via
a
catalyst
addition
and
elimination
process,
has
emerged
in
the
past
few
decades.
This
review
is
aimed
to
summarize
recent
advances
of
by
highlighting
some
outstanding
challenges
confirming
potential
areas
improvement,
which
may
offer
inspiration
for
future
studies.
Advanced Synthesis & Catalysis,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
Imidazolium‐dithiocarboxylate
zwitterions
(NHC
⋅
CS
2
),
a
novel
organocatalyst
that
derived
from
N‐heterocyclic
carbene
(NHC),
was
used
to
activate
cyclopropenones.
Under
the
catalysis
of
10
mol%
NHC
2,
range
phenols,
alcohols,
primary
and
secondary
amines
react
with
cyclopropenones
produce
trisubstituted
α
,
β
‐unsaturated
esters
amides
in
46–95%
yield.
More
than
68
products,
including
7
natural
product
derivatives
have
been
synthesized
through
this
method.
Mechanism
study
showed
act
as
Lewis
base
C=C
double
bond
trigger
ring‐opening
reaction.
HRMS
analysis
indicated
formation
key
adduct
cyclopropenone.
importantly,
demonstrated
completely
different
catalytic
activity
catalysts,
latter
one
cannot
catalyse
these
reactions.
RSC Advances,
Год журнала:
2025,
Номер
15(11), С. 8335 - 8345
Опубликована: Янв. 1, 2025
In
this
study,
a
series
of
sixteen
(16)
d
-fructose-based
bifunctional
thioureas
were
examined
as
organocatalysts
for
the
enantioselective
Friedel–Crafts
alkylation
indoles
and
pyrrole
with
β-nitrostyrenes.
Chiral
plasmonic
nanostructures
have
been
increasingly
explored
for
asymmetric
catalysis,
high-sensitivity
sensors
with
selectivity
and
advanced
optical
components.
This
review
summarizes
their
synthesis
methods
recent
progress
in
the
field.
Ultrasonics Sonochemistry,
Год журнала:
2025,
Номер
unknown, С. 107367 - 107367
Опубликована: Апрель 1, 2025
Xanthenes
are
an
important
class
of
heterocycles
in
medicinal
chemistry
due
to
their
diverse
pharmacological
properties.
These
tricyclic
aromatic
compounds,
characterised
by
a
dibenzo[b,e]pyran
core
with
oxygen
atom
at
central
position,
have
gained
significant
attention
for
extensive
applications.
Beyond
pharmaceuticals,
xanthenes
widely
used
textiles,
food
industries,
electro-optical
devices,
dyes,
and
bioimaging
agents.
Xanthene
derivatives,
particularly
9-substituted
xanthenes,
exhibit
wide
range
biological
activities,
including
antiparasitic,
antibacterial,
antileishmanial,
cytotoxic,
neuroprotective,
photophysical
effects,
making
them
valuable
drug
discovery.
The
xanthene
scaffold
is
present
various
bioactive
natural
compounds
such
as
mulgravanols
A
B,
hermannol,
(+)-myrtucommulone
D,
homapanicones
blumeaxanthene
II,
acrotrione.
Clinically
relevant
xanthene-based
drugs
include
propantheline
bromide
(antimuscarinic),
methantheline
(antispasmodic),
phloxine
B
(photosensitiser
antimicrobial
therapy).
Thus,
synthetic
approaches
been
developed
the
construction
ultrasound-assisted
green
methodologies
gaining
prominence.
Ultrasound
technique
offers
advantages
over
conventional
methods,
higher
yields,
faster
reaction
rates,
improved
selectivity
under
milder
conditions.
This
review
comprehensively
explores
synthesis
functionalised
derivatives
eco-friendly
alternative.
To
best
our
knowledge,
this
first
in-depth
focusing
on
methodology
ultrasound
irradiation.
