Photoredox-Mediated Radical Addition/Cyclization To Construct Benzannulated 6,5-Spiroketal Glycosides
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 30, 2025
We
herein
present
a
green
and
mild
photoredox
strategy
for
constructing
framework
of
benzannulated
6,5-spiroketal
glycosides.
This
method
employs
various
O-arylacetylene
glycosides
aryl
ketone
acids
as
the
starting
materials,
facilitating
rapid
straightforward
synthesis
with
up
to
92%
yields
under
catalytic
conditions.
efficient
approach
has
potential
significantly
enhance
molecular
library
carbohydrate-based
pharmaceuticals.
Language: Английский
Copper-PMHS System-Enabled Reductive Cyclization of o-Aminobenzamides with CO2 as a Single-Carbon Synthon
Jiang Nan,
No information about this author
Lu Zhang,
No information about this author
Rui Cao
No information about this author
et al.
The Journal of Organic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Chemical
utilization
of
carbon
dioxide
(CO2)
has
emerged
as
a
sustainable
access
for
synthesizing
high-value
chemicals.
Continuously
designing
the
more
practical
reaction
systems
is
large
importance.
Herein,
an
unprecedented
and
powerful
copper-PMHS
reductive
system
o-aminobenzamides
with
CO2
disclosed.
Synthetically,
diverse
range
quinazolinones
(>70
examples)
are
rapidly
assembled
excellent
functional
group
tolerance
in
good
yields.
Moreover,
building
other
types
heterocycles
such
benzothiazoles
benzimidazoles
also
allowable.
Mechanistically,
differing
from
reported
carbonylation
cases,
this
finding
represents
scarce
example
single-carbon
atom
synthon
PMHS
system.
Language: Английский