European Journal of Organic Chemistry,
Journal Year:
2022,
Volume and Issue:
26(2)
Published: Dec. 2, 2022
Abstract
A
photochemical
method
based
on
visible‐light
(white
LEDs/sunlight)
irradiation
has
been
developed
for
the
regioselective
and
oxidative
C(sp
2
)−H
selenylation
sulfenylation
of
substituted
2‐amino‐1,4‐naphthoquinones
under
oxygen
atmosphere.
The
process
does
not
require
any
external
photoredox
catalysts.
other
notable
advantages
this
protocol
are
metal‐free
synthesis,
visible
light/sunlight
as
energy
sources,
good
substrate
scope,
moderate
to
yields
(41–91
%)
with
high
regioselectivity.
Synthesis,
Journal Year:
2023,
Volume and Issue:
55(13), P. 2027 - 2036
Published: Feb. 9, 2023
Abstract
A
simple
and
efficient
visible-light-induced
methodology
has
been
developed
for
the
selective
synthesis
of
dihydro-4H-furo[3,2-c]chromen-4-one
derivatives
via
dehydrogenative
coupling
reaction.
The
is
highly
useful
varieties
dihydro-4H-furo[3,2-c]chromen-4-ones
from
readily
accessible
reactants
under
oxygen
atmosphere.
Importantly,
additive-free
approach
also
demonstrated
this
transformation.
results
mechanistic
investigation
showed
that
reaction
proceeded
through
a
radical
pathway.
Additionally,
synthesized
transformed
into
different
4H-furo[3,2-c]chromen-4-ones
protocols.
Synlett,
Journal Year:
2022,
Volume and Issue:
34(07), P. 823 - 828
Published: July 28, 2022
Abstract
A
facile
one-step
synthetic
approach
to
dihydrofuro-[3,2-c]chromenones
and
furo[3,2-c]chromenones
by
the
reaction
of
methyl
enol
ethers
with
4-hydroxycoumarins
under
metal-free
conditions
is
presented.
Dihydrofuro[3,2-c]chromenones
furo[3,2-c]-chromenones
were
selectively
obtained
controlling
stoichiometry
boron
trifluoride
diethyl
etherate.
An
unexpected
aryl-group
migration
followed
aromatization
furan
moiety,
leading
a
variety
furo[3,2-c]chromenone
derivatives
in
good
yields,
reported.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(63), P. 8153 - 8169
Published: Jan. 1, 2024
This
feature
article
summarises
our
recent
contributions
(2019-2023)
in
designing
and
developing
a
handful
of
promising
organic
transformations
for
accessing
several
diversely
functionalised
biologically
relevant
scaffolds,
following
the
green
chemistry
principles,
particularly
focusing
on
application
low-energy
visible
light,
electrochemistry,
ball-milling,
ultrasound,
catalyst-
additive-free
synthetic
strategies.
Royal Society of Chemistry eBooks,
Journal Year:
2024,
Volume and Issue:
unknown, P. 287 - 298
Published: Feb. 21, 2024
Organophosphorus
chemistry
is
a
broad
and
exciting
field,
with
potential
opportunities
for
researchers
involved
in
multi-disciplinary
areas
of
scientific
endeavour,
including
organic,
medicinal,
pharmaceutical,
agricultural,
industrial
chemistry.
compounds
find
extensive
applications
all
these
fields
owing
to
their
inherent
physical
biological
properties.
Since
its
first
development
the
90s,
green
sustainable
has
grown
considerably
over
past
two
decades.
It
become
much
more
prevalent
among
working
branches
chemical
science.
As
part
noteworthy
developments,
synthetic
organic
chemists
have
been
motivated
develop
eco-friendly
methodologies
generating
phosphorus-functionalised
interest,
focusing
on
various
principles.
result,
considerable
progress
towards
accomplished
during
last
decade.
In
continuation
our
earlier
contributions,
this
chapter
also
aims
offer
an
overview
such
developments
approaches
organophosphorus
reported
2021.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
photocascade
strategy
is
disclosed
for
the
synthesis
of
trans
-dihydrofurocoumarin
utilising
EDA
complex
followed
by
1,4-radical
conjugate
addition
pyridinium
ylide.
Synthetic Communications,
Journal Year:
2022,
Volume and Issue:
53(1), P. 40 - 48
Published: Nov. 29, 2022
A
general
and
facile
visible-light
mediated
protocol
for
the
synthesis
of
2-arylamino-5-aryl-1,3,4-
thiadiazoles
via
one-pot
condensation
intramolecular
C–S
coupling
cascade
reaction
has
been
developed.
This
is
mild,
practical,
metal-free
exogenous
oxidant-free,
only
involves
Eosin
Y
as
photocatalyst
using
oxygen
sole
terminal
oxidant.
exhibits
synthetic
simplicity,
broad
scope
substrates,
excellent
functional
group
compatibility.
Gram-scale
can
be
also
facilitated
with
a
satisfactory
yield,
which
opens
up
possibility
practical
applications.
