Multicomponent Modular Synthesis of Chiral Bicyclic Bridged Compounds via an Alkenylfuran-Based Acylation/Rearrangement/Cyclization Sequence
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 26, 2025
The
catalytic
asymmetric
multicomponent
acylation/rearrangement/cyclization
of
alkenylfurans
with
acyl
oxime
esters/arylamines
or
esters/arylamines/hydroxylamine
has
been
developed.
This
method
employs
synergistic
photoredox/Brønsted
acid
catalysis,
enabling
the
efficient
and
versatile
synthesis
multifunctionalized
[3.2.1]
[4.2.1]
bicyclic
bridged
compounds
in
high
yields
excellent
diastereo-
enantioselectivities.
Язык: Английский
Enantioselective Synthesis of N-Substituted Indoles with α,β-Stereocenters via Sequential Aza-Piancatelli/Cyclization Reactions
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
A
sequence
of
catalytic
asymmetric
aza-Piancatelli
rearrangement
and
Pd-catalyzed
cyclization
has
been
developed
to
construct
chiral
N-substituted
indoles
featuring
α,β-consecutive
stereocenters.
This
indole
framework,
bearing
α,β-chiral
centers,
is
a
prevalent
structural
motif
in
natural
products
biologically
active
molecules,
yet
enantioselective
methods
for
its
preparation
remain
scarce.
protocol
offers
efficient
access
diverse
array
derivatives
with
stereocenters,
achieving
high
yields
excellent
enantioselectivities.
Язык: Английский
Calcium(II)‐Catalyzed Synthesis of Sulfoximinocyclopentenones
Advanced Synthesis & Catalysis,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 29, 2024
Abstract
A
series
of
4‐sulfoximinocyclopent‐2‐en‐1‐ones
was
prepared
in
35
to
99%
yield
through
a
calcium(II)‐catalyzed
aza‐Piancatelli
reaction,
including
enantioenriched
form.
Depending
on
their
substitution
pattern,
diverse
diastereoselective
chemical
transformations
can
be
applied
these
scaffolds,
allowing
access
cyclopentane
derivatives.
This
study
opens
synthetic
routes
cyclopentane‐based
scaffolds
and
also
paves
the
way
for
exploration
associated
space
drug
discovery.
Язык: Английский