Tetrafluoroethylation of Electron‐Rich Alkenyl Iodides Enabled by in situ Generation of Solvent‐Stabilized “Ligandless” CuCF2CF2H
Cristina Maria Segovia,
Luana L. T. N. Porto,
Paula Casasús
и другие.
Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
366(12), С. 2684 - 2690
Опубликована: Апрель 23, 2024
Abstract
In
this
study,
we
have
developed
a
metal‐mediated
synthetic
method
for
incorporating
the
1,1,2,2‐tetrafluoroethyl
(CF
2
CF
H)
motif
into
unactivated,
electron‐rich
alkenyl
iodides
using
cross‐coupling
reactions.
We
discovered
that
stable
Cu(CF
H)(PPh
Me)
3
complex,
while
unreactive
with
these
substrates,
serves
as
P‐ligated
reservoir
formation
of
solvent‐stabilized
“ligandless”
and
reactive
CuCF
H
species.
This
transformation
occurs
upon
addition
CuBr,
which
partially
scavenges
P‐ligand
in
form
CuBr(PPh
.
The
resulting
situ
generated
solvent
stabilized
system
significantly
enhances
reactivity
particularly
towards
challenging
substrates.
advancement
enables
synthesis
HCF
‐glycals,
well
nucleosides/nucleobases
arenes.
Язык: Английский
Total synthesis of deinococcucins A–D and their isomeric derivatives via stereo- and regio-selective glycosylation: the discovery of a novel anti-angiogenic agent
Honghui Lee,
Shihwa Seong,
Eun Seo Bae
и другие.
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(21), С. 6078 - 6082
Опубликована: Янв. 1, 2024
First
total
syntheses
of
deinococcucins
A–D
and
their
four
new
derivatives
were
achieved
using
stereo-
regio-selective
glycosylations
as
key
reaction
steps.
Язык: Английский
Creating glycoside diversity through stereoselective carboboration of glycals
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Ноя. 23, 2024
Site-specific
modification
of
glycosides
to
enhance
or
alter
the
physiological
properties
parent
molecule
has
become
a
highly
attractive
strategy
in
drug
development.
However,
creating
glycoside
building
blocks
with
multiple
diversifiable
positions
from
readily
available
sugar
precursors
remains
challenging
task.
Herein,
we
present
regio-
and
stereoselective
nickel-catalyzed
carboboration
glycals,
which
offers
platform
for
generating
diversity
diverse
C1
C2
potential.
Specially,
integration
modifiable
boronate
group
at
position
markedly
amplifies
versatility
this
approach,
furnishing
universal
method
swiftly
rare
sugars
C2-site
modifications
through
expedited
downstream
transformations.
This
demonstrates
broad
substrate
scope
tolerates
various
functional
groups
complex
natural
molecular
architectures.
Moreover,
illustrate
synthetic
potential
synthesis
array
analogs
both
products
pharmaceuticals.
Creating
authors
Язык: Английский