Synthesis of 12- to 26-Membered Macrocyclic Dienes by Directed Intramolecular Alkene/Alkyne Cross-Coupling
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 9, 2025
The
first
iridium-catalyzed
intramolecular
alkene/alkyne
cross-coupling
reaction
has
been
developed
to
prepare
a
wide
range
of
12-
26-membered
macrocyclic
1,3-dienes.
This
operationally
simple
protocol
proceeded
by
NHTs
amide-enabled
alkenyl
C-H
functionalization
and
exhibited
functionality
tolerance
excellent
E/Z
ratio
selectivity.
Язык: Английский
N,N- and N,O-Bidentate-Chelation-Assisted Alkenyl C–H Functionalization
Yawei Zhang,
Chengxing Peng,
Xiaoli Li
и другие.
Molecules,
Год журнала:
2025,
Номер
30(8), С. 1669 - 1669
Опубликована: Апрель 8, 2025
Chelation-assisted
olefinic
C-H
functionalization
has
been
demonstrated
to
be
a
powerful
method
of
constructing
multi-substituted
alkenes
from
simpler
ones.
This
strategy
produces
complex
in
regio-
and
stereoselective
manner,
followed
by
endo-
exo-cyclometallation.
Among
the
various
directing
groups
developed,
N,N-
N,O-bidentate
are
most
widely
used
selectively
promote
due
their
fine,
tunable,
reversible
coordination
with
metal
center.
In
this
review,
we
discuss
group-assisted
bond
reactions,
including
alkenylation,
alkylation,
arylation,
thiolation,
silylation,
halogenation,
cyclization.
Язык: Английский
Chelation-assisted α and β C–H functionalization of aryl alkenes with alkynes and alkenes
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(17), С. 4862 - 4868
Опубликована: Янв. 1, 2024
α
C–H
alkenylation
of
aryl
alkenes
by
six-membered
exo
-palladacycles
was
demonstrated
to
afford
dienes,
which
underwent
β
through
seven-membered
endo
produce
trienes
with
excellent
E
/
Z
ratio
selectivity.
Язык: Английский
Stereo-selective synthesis of complex dienes and eneynes by sequential hydroarylation and olefinic C–H functionalization
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(16), С. 4456 - 4463
Опубликована: Янв. 1, 2024
We
present
a
preparation
of
complex
dienes
and
eneynes
by
Rh-catalyzed
hydroarylation
internal
alkynes
Pd-catalyzed
olefinic
C–H
alkenylation,
alkynylation
allylation,
enabled
the
chelation
assistance
pyrazinamide
or
picolinamide.
Язык: Английский