ChemistrySelect,
Journal Year:
2023,
Volume and Issue:
8(32)
Published: Aug. 23, 2023
Abstract
The
use
of
bioresource‐derived
wastes
to
valuable
organic
reactions
is
a
new
and
fascinating
trend
in
the
current‐day
chemistry
which
aims
at
decrease/elimination
depleting
resources
based
chemicals.
This
article
discusses
sustainable
protocol
for
synthesis
C=C
bonds
via
Knoevenagel
condensation
reaction
α‐cyano
esters
with
aldehydes
using
water
extract
Annona
squamosa
fruit
shell
ash
(WEASF)
as
catalyst.
These
have
been
conducted
room
temperature
(RT)
aqueous
media
products
are
purified
by
recrystallization.
WEASF
acts
biorenewable
base
process
avoids
solvents
column‐based
purifications
products.
bio‐derived
also
showed
its
high
reusability
current
alternative
existing
methods
making
polysubstituted
olefins.
Green Chemistry,
Journal Year:
2022,
Volume and Issue:
24(16), P. 6215 - 6223
Published: Jan. 1, 2022
WEPA,
a
waste
biomass-derived
catalyst,
was
used
to
synthesize
quinoxalines
from
aryl/heteroaryl
1,2-diamines
and
α-hydroxy
ketones
via
metal
catalyst/added
oxidant-free
sequential
condensation–cyclization–oxidation
process.
In
this
study,
an
efficient
and
convenient
three-component
cyclization
protocol
is
presented
for
the
synthesis
of
xanthene
derivatives
using
a
water
extract
red
mud
(WERM).
Red
produced
in
large
quantities
as
waste
aluminum
industries,
first
report
to
use
WERM
renewable
medium
xanthenes.
We
focused
our
attention
on
domino
condensation/Michael
addition/intramolecular
both
experimentally
density
functional
theory
(DFT)
studies,
where
formation
chromenopyrimidines
was
suppressed
simultaneously.
Furthermore,
innovation
operates
straightforward
cost-effective
manner,
accommodates
numerous
groups,
encompasses
broad
range
substrates,
produces
exceptional
yields,
eliminates
need
column
chromatography,
enables
scalable
syntheses,
allows
reusability
reaction
media,
all
which
contribute
principles
green
sustainable
chemistry.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Nov. 3, 2023
A
pioneering
robust
and
green
heterogeneous
acidic
catalyst
(CSA@g-C3N4)
was
rationally
designed
via
immobilization
of
camphorsulfonic
acid
(CSA)
on
the
g-C3N4
surface
under
mild
conditions.
Grafting
CSA
in
lattice
is
distinguished
as
root
cause
facilitating
structure
change
g-C3N4,
leading
to
a
unique
morphology,
accordingly
remarkable
catalytic
efficiency
CSA@g-C3N4.
The
morphology
new
as-prepared
nano-catalyst
specified
by
means
FT-IR,
XRD,
SEM,
EDS,
TEM,
TGA,
BET.
For
first
time,
it
exhibited
that
efficient
CSA@g-C3N4
can
productively
accomplish
three-component
reactions
with
high
yields
also
serve
an
inspiration
for
easily
performing
various
sorts
MCRs
based
our
finding.
recommended
synthesis
pathway
chromenes
derivatives
facile
cost-effective
which
applies
condensation
reaction
salicylaldehyde,
thiophenol,
malononitrile
followed
ready
purification
benign
manner.
Moreover,
nanocomposite
be
promptly
reused,
illustrating
no
sensational
decrease
activity
after
ten
times.
ChemistrySelect,
Journal Year:
2022,
Volume and Issue:
7(13)
Published: April 4, 2022
Abstract
A
green,
commodious,
immensely
versatile
synthetic
route
for
agro
waste
extract
WELPSA
catalyzed
cyclocondensation
of
biologically
active
triazolothiadiazine‐coumarin
hybrid
derivatives
has
been
studied.
proficient
synthesis
offused
heterocycles
9
i
–
w
via
dehydrative
condensation
with
cyclization
of4‐((4‐amino‐5‐mercapto‐4
H
‐1,2,4‐triazol‐3‐yl)methyl)‐2‐aryl‐2,4‐dihydro‐3
‐1,2,4‐triazol‐3‐one
(
5
a
‐
‐c
)
and
substituted
bromoacyl
coumarins
8
d
‐h
)has
incorporated
in
presence
different
catalysts
including
WELPSA,
green
catalyst.
The
silico
docking
studies
these
previously
unknown
compounds
revealed
favorable
C
score
Chemscore
values
the
vitro
antifungal
assay
against
three
fungal
strains
showed
excellent
to
good
activity.
