Asymmetric Catalytic (3 + 2) Cyclization and Sequential Reaction to Construct Dihydrofuran- and Azepine-Based Spirooxindoles
Qiliang Luo,
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Yuqiao Zhou,
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Jing Zhang
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et al.
Organic Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 22, 2025
The
enantioselective
formal
(3
+
2)
cyclization
and
sequential
reaction
of
2-malononitrile-substituted
oxindoles
with
benzaldehydes
ortho-aminobenzaldehydes
were
achieved
by
chiral
N,N′-dioxide/metal
complex
Lewis
acid
catalysts.
This
protocol
supplies
facile
efficient
access
to
highly
functionalized
dihydrofuran-
azepine-based
spirooxindoles.
Based
on
the
control
experiments
deuterium
labeling
studies,
interconversion
diastereomeric
intermediates
under
conditions
reversible
1,5-H
transfer
step
disclosed.
Language: Английский
Catalytic Enantioselective Functionalization of Maleimides: An Update
Muriel Amatore,
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Damien Bonne,
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Thierry Constantieux
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et al.
Chinese Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
42(24), P. 3605 - 3622
Published: Nov. 13, 2024
Comprehensive
Summary
Maleimide
derivatives
are
well‐established
reactive
intermediates
also
found
in
natural
products,
synthetic
pharmaceuticals
and
functional
polymers.
Their
specific
reactivity
widespread
applications
the
field
of
bioconjugation
allowed
for
development
highly
selective
functionalizations
based
on
simple
additions
cycloadditions
with
possible
control
central
C–N
axial
chirality.
These
multisite‐reactive
scaffolds
have
aroused
a
long‐standing
interest
throughout
scientific
community
more
particularly
as
powerful
electrophilic
partners
recently
nucleophilic
some
transformations.
The
persistent
these
easily
accessible
platforms
over
last
decade
has
enabled
new
enantioselective
transformations
major
advancements
this
presented
review.
Key
Scientists
Language: Английский
Asymmetric catalytic concise synthesis of 3-(3-indolomethyl)-oxindoles for the construction of trigolute analogs
Zun Yang,
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Zheng Jiang,
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Zheng Tan
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et al.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(78), P. 10926 - 10929
Published: Jan. 1, 2024
In
this
paper,
a
newly
asymmetric
catalytic
construction
of
3-(3-indolomethyl)oxindoles
was
developed.
Taking
use
method
as
the
key
step,
concise
syntheses
trigolute
analogs
accomplished.
Language: Английский