Imidazolium‐dithiocarboxylate zwitterions catalysed ring‐opening additions of cyclopropenones
Advanced Synthesis & Catalysis,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 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.
Language: Английский
Phosphine-catalyzed reaction of cyclopropenones with water: divergent synthesis of highly functionalized γ-butenolides, trisubstituted α,β-unsaturated acids and anhydride
Fujuan Li,
No information about this author
Dan Yang,
No information about this author
Hongyan Qu
No information about this author
et al.
Organic & Biomolecular Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
catalyst-regulated
phosphine-catalyzed
reaction
involving
cyclopropenones
and
water
has
been
realized,
which
can
be
utilized
for
the
preparation
of
γ-butenolides
trisubstituted
α,β-unsaturated
acids.
Language: Английский
Recent advances in synthetic approaches for bioactive cinnamic acid derivatives
Beilstein Journal of Organic Chemistry,
Journal Year:
2025,
Volume and Issue:
21, P. 1031 - 1086
Published: May 28, 2025
Cinnamic
acid
derivatives
represent
a
significant
class
of
biologically
active
compounds
exhibiting
broad
spectrum
activities,
such
as
antifungal,
antidengue,
antimetastatic,
antimicrobial,
antibacterial,
and
anticancer
properties.
Their
preparation
has
attracted
considerable
attention
due
to
their
versatile
applications
across
the
pharmaceutical,
food,
chemical
sectors.
This
review
elucidates
functional
groups
cinnamic
that
are
instrumental
in
rational
design
derivatives.
A
comprehensive
representative
recent
advancements
synthetic
methodologies
over
past
five
years
is
presented,
particularly
emphasizing
scaffolds
bioactive
The
provides
strategic
overview
alternative
routes
highlights
latest
innovations,
including
more
efficient,
highly
selective,
environmentally
sustainable
approaches.
Given
widespread
incorporation
framework
various
therapeutic
agents,
this
delivers
critical
insights
into
molecular
for
hit-to-lead
optimization,
offering
detailed
strategies
diverse
modifications.
By
critically
examining
these
methodologies,
paper
underscores
role
expanding
utility
addressing
prevailing
challenges.
Language: Английский