Cascade Reaction of α-Aryl Vinyl and Propargyl Sulfonium Salts with Carbon Nucleophiles: Synthesis of Functionalized Benzyl and Homoallyl Thioethers
Organic & Biomolecular Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
cascade
reaction
of
α-aryl
vinyl
and
propargyl
sulfonium
salts
with
C-nucleophiles
afforded
functionalized
thioethers
via
Michael
addition
followed
by
[2,3]-sigmatropic
rearrangement.
Language: Английский
Two Faces of Styrylsulfonium Salts: Domino Michael Addition/Cyclopropanation of 2-(2-Acylvinyl)indoles for the Synthesis of Cyclopropa[3,4]pyrrolo[1,2-a]indoles
The Journal of Organic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 6, 2025
We
report
a
domino
reaction
of
2-(2-acylvinyl)indoles
as
well
the
corresponding
pyrroles
with
styrylsulfonium
salts
under
mild
conditions,
affording
cyclopropamitosene
analogues
in
high
yields
and
complete
diastereoselectivity.
A
wide
range
(E)-β-hetaryl-α,β-unsaturated
ketones
were
successfully
employed
for
synthesis
potentially
bioactive
cyclopropa[3,4]pyrrolo[1,2-a]indoles
related
cyclopropa[a]pyrrolizines,
demonstrating
versatility
developed
method.
In
contrast,
(Z)-isomers
substrates
fail
to
give
derivatives
but
undergo
cyclopropanation
terminal
methyl
group.
Language: Английский
Desymmetrization of Cyclohexadienones via [3+2]/[2+1] Domino Annulation: Access to Cyclopropane Fused Tricyclic Enones
Yannan Zhu,
No information about this author
Sen Wang,
No information about this author
Bo Fang
No information about this author
et al.
Advanced Synthesis & Catalysis,
Journal Year:
2024,
Volume and Issue:
366(13), P. 2939 - 2944
Published: April 26, 2024
Abstract
A
[3+2]/[2+1]
domino
annulation
reaction
of
cyclohexadienones
and
α‐aryl
vinylsulfonium
salts
has
been
reported.
range
cyclopropane
fused
tricyclic
enones
bearing
four
contiguous
stereocenters
were
obtained
as
a
single
diastereomer
in
44–93%
yields.
The
synthetic
utility
was
demonstrated
with
the
gram‐scale
reactions
further
transformations
products.
Language: Английский
Synthesis of 6/5/3-Fused Tricyclic Scaffolds via Multistep Cascade Cyclization of α-Aryl Vinylsulfoniums with para-Quinamines and para-Quinols
Zhen‐Hua Wang,
No information about this author
Dong-Qun Huang,
No information about this author
Ping Wang
No information about this author
et al.
Organic Letters,
Journal Year:
2024,
Volume and Issue:
26(28), P. 5905 - 5910
Published: July 9, 2024
Herein,
we
present
a
straightforward
approach
to
access
hydroindoline-5-one-based
6/5/3-fused
polycyclic
ring
structures
through
multistep
cascade
reactions
involving
α-aryl
vinylsulfoniums
and
Language: Английский