Journal of Molecular Liquids,
Journal Year:
2024,
Volume and Issue:
412, P. 125814 - 125814
Published: Aug. 19, 2024
Lubricants,
composed
of
a
base
oil
and
various
additives,
reduce
friction
abrasion
between
moving
surfaces.
High-performance
lubricants,
especially
in
the
automotive
space
industries,
have
driven
advancements
synthetic
oils
like
polyalphaolefins
(PAOs),
known
for
their
high
viscosity
index
stability.
Low
molecular
weight
polyisobutylenes
(PIBs)
are
used
multiple
applications,
including
as
improvers.
PIBs
produced
via
cationic
polymerization
isobutylene
using
Lewis
acid
initiators
co-initiators,
often
conducted
at
low
temperatures
with
harmful
substances
BF3.
Efforts
being
made
to
develop
more
eco-friendly
processes,
such
AlCl3
ionic
liquids
(ILs).
In
this
research,
boehmite-supported
dendritic
ILs
(Gen1
Gen2)
were
synthesized
tested
co-initiators
Raffinate-1
polymerization.
The
improved
stability
catalytic
system,
allowing
reduced
usage,
desirable
characteristics.
Density
Functional
Theory
calculations
unveiled
importance
interaction
liquids.
Organic Letters,
Journal Year:
2024,
Volume and Issue:
26(1), P. 62 - 67
Published: Jan. 3, 2024
We
have
found
a
chameleonic
reactivity
of
imidoyl
sulfoxonium
ylides.
On
the
one
hand,
ylides
react
with
electron-deficient
reagents,
such
as
alkynyl
esters,
to
lead
formation
1,2-dihydro-pyridines.
The
methyl
group
attached
sulfur
atom
acts
methylene
donor.
other
pyridinium
1,4-zwitterionic
thiolates,
which
leads
functionalized
pyrroles.
Both
transformations
feature
mild
reaction
conditions
and
good
functional
tolerance.
Organic Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
10(11), P. 2813 - 2829
Published: Jan. 1, 2023
This
review
summarizes
the
recent
advances
in
cyclization
reactions
involving
pyridinium
1,
n
-zwitterions
(
=
4
and
5)
highlights
applications
of
efficient
construction
heterocycles.
Molecular Catalysis,
Journal Year:
2023,
Volume and Issue:
542, P. 113110 - 113110
Published: April 6, 2023
We
report
here
a
transition
metal-free
synthesis
of
quinazoline
derivatives
starting
from
2-aminobenzyl
alcohols
and
aryl
amides
via
an
alcohol
dehydrogenation
strategy
promoted
by
potassium
tertiary
butoxide.
The
control
experiments
are
carried
out
to
identify
the
reaction
intermediates
role
K+
ion
in
reaction.
DFT
calculations
unveil
mechanism,
with
special
focus
on
rate
determining
state.
present
method
tolerates
variety
functional
groups
providing
easy
access
diversely
substituted
quinazolines.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(11), P. 8207 - 8212
Published: Jan. 1, 2025
N
,
-Boc
2
amides
have
emerged
as
the
most
common
class
of
acyclic
twisted
that
been
engaged
in
a
range
C–N
activation
and
cross-coupling
processes
ubiquitous
amide
bonds.
Chemistry - A European Journal,
Journal Year:
2024,
Volume and Issue:
30(28)
Published: March 13, 2024
Abstract
N
‐Heterocyclic
ylides
are
important
synthetic
precursors
to
rapidly
build
molecular
complexity.
Pyrazolium
have
largely
been
unexplored,
and
we
demonstrate
their
diverse
utility
in
this
report.
We
show
that
these
readily
accessible
building
blocks
can
be
used
construct
different
heterocyclic
skeletons
by
varying
the
coupling
partner.
Indolizines
formed
via
an
‐deletion
type
mechanism
when
reacting
pyrazolium
salts
with
electron
deficient
alkynes.
1,2‐Dihydropyrimidines
a
rearrangement
isocyanates.
These
reactions
enable
access
valuable
heteroarenes
without
need
for
transition
metal
catalysis,
high
temperatures,
or
strong
bases.
