Palladium-catalyzed decarboxylative (4 + 3) cycloadditions of bicyclobutanes with 2-alkylidenetrimethylene carbonates for the synthesis of 2-oxabicyclo[4.1.1]octanes
Chemical Science,
Год журнала:
2024,
Номер
15(34), С. 13942 - 13948
Опубликована: Янв. 1, 2024
While
cycloaddition
reactions
of
bicyclobutanes
(BCBs)
have
emerged
as
a
potent
method
for
synthesizing
(hetero-)bicyclo[
Язык: Английский
Palladium-catalyzed [4+4] cycloaddition of 2-pyrones with 2-alkylidenetrimethylene carbonates: access to bridged eight-membered oxygen heterocycles
Organic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(10), С. 2864 - 2869
Опубликована: Янв. 1, 2024
A
novel
palladium-catalyzed
[4
+
4]
cycloaddition
of
2-pyrones
with
2-alkylidenetrimethylene
carbonates
has
been
developed
for
the
synthesis
bridged
eight-membered
oxygen
heterocycles
in
good
yields
and
excellent
stereoselectivities.
Язык: Английский
Sc(OTf)3-Catalyzed Precise Construction of Medium-Sized [4.2.1]-Oxabridged Scaffolds
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 18, 2024
In
this
study,
the
readily
available
and
inexpensive
Sc(OTf)
Язык: Английский
Synthesis of Indole‐Fused Eight‐Membered Oxa‐Rings via Palladium‐Catalyzed Asymmetric [4+4] Cycloaddition of Indole‐2,3‐Quinodimethanes with 2‐Alkylidenetrimethylene Carbonates
Chinese Journal of Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 16, 2024
Comprehensive
Summary
We
report
a
palladium‐catalyzed
asymmetric
[4+4]
cycloaddition
reaction
between
2‐alkylidenetrimethylene
carbonate
and
electron‐deficient
indole‐2,3‐quinodimethanes
(
IQDMs
).
This
features
exclusive
regioselectivity,
high
yield
(up
to
98%),
excellent
enantioselectivity
95%
ee),
easy
scale‐up
without
any
loss
of
efficiency,
making
it
valuable
for
the
synthesis
indole‐fused
eight‐membered
oxa‐rings.
Язык: Английский