The Chemical Record,
Journal Year:
2021,
Volume and Issue:
21(12), P. 4150 - 4173
Published: Aug. 9, 2021
In
the
last
few
years,
there
has
been
an
explosive
growth
in
area
of
para-quinone
methide
(p-QM)
chemistry.
This
boom
is
actually
due
to
unique
reactivity
pattern
p-QMs,
and
also
their
remarkable
synthetic
applications.
fact,
p-QMs
serve
as
synthons
for
unsymmetrical
diaryl-
triarylmethanes,
construction
diverse
range
carbocycles
heterocycles.
a
wide
structurally
complex
heterocyclic
frameworks
could
be
accessed
through
transformations
modified
stable
p-QMs.
Therefore,
main
focus
this
review
article
cover
recent
advancements
transition-metal,
Lewis
acid
base-catalyzed/mediated
p-quinone
methides
(p-QMs)
oxygen-
nitrogen-containing
Chemical Communications,
Journal Year:
2021,
Volume and Issue:
57(72), P. 9010 - 9028
Published: Jan. 1, 2021
This
feature
article
covers
the
recent
status
on
reactivities
of
α-alkyl
cyclic
N
-sulfonyl
ketimines
as
resourceful
nucleophiles,
targeting
fused
carbo-
and
heterocycles,
aza-arenes
etc
.
In
addition,
mechanistic
studies
have
been
presented.
Organic Letters,
Journal Year:
2021,
Volume and Issue:
23(15), P. 5885 - 5890
Published: July 19, 2021
A
new
tandem
annulation
of
p-quinone
methides
(p-QMs)
with
ynamides
is
described.
This
cascade
reaction
features
a
unique
combination
(2
+
2)
annulation,
retro-4π
electrocyclization,
and
imino-Nazarov
cyclization,
wherein
vinyl
(p-VQMs)
as
one
the
key
intermediates
have
been
identified
chemically.
Significantly,
an
unusual
structural
reconstruction
p-QMs
involving
cleavage
C5–C6
bond
late-stage
formation
C4–C6
involved,
leading
to
methodology
development
for
construction
functionalized
aminoindenes.
The Journal of Organic Chemistry,
Journal Year:
2021,
Volume and Issue:
86(9), P. 6721 - 6733
Published: April 12, 2021
An
unprecedented
substrate-controlled
annulation
method
for
the
synthesis
of
fascinating
classes
angularly
fused
cyclopenta[c]chromenes
and
benzo[f]cyclopenta[d][1,2]thiazepine
5,5-dioxide
derivatives
in
good
to
high
chemical
yields
is
reported.
This
Michael-initiated
ring-expansion
reaction
would
enable
two
C–C
one
C–O
or
C–N
bonds
by
a
judicious
choice
carbonucleophiles,
either
4-alkyl
3-alkyl-substituted
N-sulfonyl
ketimines,
respectively,
with
series
donor–acceptor
cyclopropane
scaffolds
as
4C
sources
promoted
DBU.
Moreover,
this
eco-friendly
mild
enough
protect
different
kinds
functionalities.
Importantly,
prepared
fulvene
were
smoothly
transformed
into
special
class
hexahydrocyclopenta[c]chromenes
single
cis–cis–cis–cis
diastereomers
excellent
simple
catalytic
hydrogenation
reaction.
Asian Journal of Organic Chemistry,
Journal Year:
2021,
Volume and Issue:
10(7), P. 1595 - 1618
Published: May 22, 2021
Abstract
Visible‐light‐induced
photoredox‐catalyzed
organic
transformations
through
single‐electron‐transfer
pathways
have
recently
come
to
the
limelight
in
modern
chemistry.
These
innovative
radical
processes
appear
as
ideal
tactics
for
making
a
diverse
set
of
pharmacologically
and
synthetically
useful
molecules
under
sustainable
conditions.
In
this
review,
we
summarize
brief
overview
recent
status
C(sp3)−X
(X=C,
S,
Se,
B,
F,
Cl
etc)
cross‐coupling
reactions
cyclobutanone
oxime
esters
surrogates
γ‐cyanoalkyl
radicals
with
various
kinds
acceptors
using
photocatalysts
irradiated
by
visible
light
or
natural
sunlight.
The
efficiency
metal‐salts
(Ir,
Ru,
Cu,
Pd
metal‐free
(eosin
Y,
rose
Bengal,
4CzIPN,
HE,
PhPTZ,
Mes−Acr+
were
thoroughly
examined
above
conversions.
Furthermore,
mechanism
said
has
also
been
presented.
Notably,
described
photocatalytic
cycles
would
further
bestow
new
mechanistic
concept
aiming
variety
cyanoalkylated
scaffolds.
New Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
48(32), P. 14163 - 14169
Published: Jan. 1, 2024
Efficient
access
to
α-carbolines
was
achieved
via
a
domino
reaction
between
iminoindoles
and
arylidene
malononitriles
using
DABCO/NaHCO
3
as
cooperative
basic
system.
The
synthesized
scaffolds
display
blue
emissions
with
good
quantum
yields.
Organic & Biomolecular Chemistry,
Journal Year:
2020,
Volume and Issue:
18(38), P. 7467 - 7484
Published: Jan. 1, 2020
Five-membered
ring
cyclic
sulfamidate
imines
(5H-1,2,3-oxathiazole
2,2-dioxides)
have
received
increasing
attention
as
useful
precursors
for
the
synthesis
of
many
valuable
heterocycles.
This
review
highlights
recent
developments
in
this
area.
