Unexpected Tellurohalogenation of Terminal N‐Alkynyl (Alkenyl) Derivatives of 4‐Functionalized Pyrazoles
ChemistryOpen,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 26, 2025
Abstract
The
efficient
synthesis
of
terminal
N‐alkenyl
and
N‐alkynyl
derivatives
pyrazole‐4‐carboxylic
acids
their
methyl
esters
as
substrates
for
studying
electrophilic
heterocyclization
has
been
reported.
regiochemistry
stereoselectivity
the
tellurium‐induced
1‐pentynyl
(butynyl,
butenyl)
substituted
under
action
tellurium
(IV)
oxide
in
hydrohalic
acid
were
determined.
This
leads
to
formation
tetrahydropyrazolo[1,2‐a]pyridazinium
dihydropyrazolo[1,2‐a]pyrazolium
intramolecular
salts,
confirmed
by
X‐ray
diffraction
(XRD)
comprehensive
spectral
analysis.
Язык: Английский
Pyridazine: A privileged scaffold in the development of 21st-century pesticides
Chinese Chemical Letters,
Год журнала:
2025,
Номер
unknown, С. 110902 - 110902
Опубликована: Янв. 1, 2025
Язык: Английский
Aggregation-induced enhanced emission (AIEE), pH sensing and selective detection of sulfuric acid of novel imidazole-based surrogates made via microwave-assisted synthesis
RSC Advances,
Год журнала:
2025,
Номер
15(8), С. 5932 - 5941
Опубликована: Янв. 1, 2025
Novel
imidazole
derivatives
were
made
exhibiting
Aggregation
Induced
Enhanced
Emission
with
strong
luminescence
(435–453
nm).
The
compounds
also
disclosed
pH
sensing
properties,
especially
towards
sulfuric
acid
at
concentrations
as
of
16.5
μM.
Язык: Английский
Pyrazolo[3,4-d]pyrimidin-4-one derivatives bearing an aniline group: design, synthesis and antifungal activity
Chemical Papers,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 28, 2025
Язык: Английский
Molecular Interactions and Structural Transformations in Water Complexes with Azoles in Solid Films: IR and DFT Study
ChemistrySelect,
Год журнала:
2024,
Номер
9(42)
Опубликована: Ноя. 1, 2024
Abstract
Azoles
are
widely
used
as
bioactive
substances,
herbicides,
catalysts,
corrosion
inhibitors,
polymeric
compositors,
organometallic
ligands,
and
optical
elements’
components.
The
interaction
with
water
plays
a
crucial
role
in
many
applications
of
azoles.
objective
this
study
is
to
observe
the
molecular
structural
transformations
1,2‐
1,3‐diazoles’,
1,2,3‐
1,2,4‐triazoles’
complexes
molecules.
We
have
selected
most
valuable
for
application
theoretical
interest
azoles
different
structures,
which
allowed
us
consider
basic
features
their
aqueous
complexes.
IR
method
allowing
fix
intermediates
solid
phase.
also
employed
hybrid
B3LYP
functional
DFT
GD3BJ
dispersion
correction.
At
cluster
formation,
hydrogen
atom
transfer
arises,
providing
labile
spatial
arrangement
system.
formation
azoles’
hydronium
ion
having
relatively
low
binding
energy
allows
reshaping
complexes’
structure
at
cluster‐to‐cluster
transition.
complex
accompanied
by
participation
both
azole
atoms.
This
provides
mobile
clusters
transition
from
donor
acceptor
centers.
Язык: Английский
Three multifunctional difluoroboron fluorescent dyes with five member N-heterocyclic ring for mechanofluorochromic behaviors, the ink-free writing and latent fingerprints imaging
Journal of Photochemistry and Photobiology A Chemistry,
Год журнала:
2024,
Номер
460, С. 116125 - 116125
Опубликована: Ноя. 1, 2024
Язык: Английский