Metallaphotoredox catalysis for sp3C–H functionalizations through hydrogen atom transfer (HAT)
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(12), С. 4099 - 4120
Опубликована: Янв. 1, 2023
sp
3
C–H
functionalizations
under
the
combination
of
photocatalytic
HAT
and
transition
metal
catalysis.
Язык: Английский
The green chemistry paradigm in modern organic synthesis
Russian Chemical Reviews,
Год журнала:
2023,
Номер
92(12), С. RCR5104 - RCR5104
Опубликована: Дек. 1, 2023
After
the
appearance
of
green
chemistry
concept,
which
was
introduced
in
vocabulary
early
1990s,
its
main
statements
have
been
continuously
developed
and
modified.
Currently,
there
are
10–12
cornerstones
that
should
form
basis
for
an
ideal
chemical
process.
This
review
analyzes
accumulated
experience
achievements
towards
design
products
processes
reduce
or
eliminate
use
generation
hazardous
substances.
The
presents
views
leading
Russian
scientists
specializing
various
fields
this
subject,
including
homogeneous
heterogeneous
catalysis,
fine
basic
organic
synthesis,
electrochemistry,
polymer
chemistry,
based
on
bio-renewable
feedstocks
energetic
compounds
materials.
A
new
approach
to
quantitative
evaluation
environmental
friendliness
by
authors
is
described.
<br>
bibliography
includes
1761.
Язык: Английский
Metallaphotoredox catalysis for sp3 C–H functionalizations through single-electron transfer
Nature Catalysis,
Год журнала:
2024,
Номер
7(9), С. 963 - 976
Опубликована: Сен. 24, 2024
Язык: Английский
Basic Concepts and Activation Modes in Visible-Light-Photocatalyzed Organic Synthesis
Synthesis,
Год журнала:
2022,
Номер
55(02), С. 164 - 192
Опубликована: Авг. 29, 2022
Abstract
Visible
light
photocatalysis
has
established
itself
as
a
promising
sustainable
and
powerful
strategy
to
access
reactive
intermediates,
i.e.
radicals
radical
ions,
under
mild
reaction
conditions
using
visible
irradiation.
This
field
enables
the
development
of
formerly
challenging
or
even
previously
inaccessible
organic
transformations.
In
this
tutorial
review,
an
overview
essential
concepts
techniques
visible-light-mediated
chemical
processes
most
common
types
photochemical
activation
molecules,
photoredox
catalysis
photosensitization,
are
discussed.
Selected
photocatalytic
alkene
functionalization
reactions
included
examples
illustrate
basic
with
particular
attention
given
understanding
their
mechanisms.
1
Introduction
2
Photocatalysts
3
Photophysical
Electrochemical
Properties
3.1
Excited-State
Energy
3.2
Ground-State
Redox
Potentials
3.3
3.4
Local
Absorbance
Maximum
for
Lowest
Absorption
3.5
Lifetime
3.6
[Ru(bpy)3]2+
Case
Study
3.7
Basic
Laws
Equations
Photochemistry
Photocatalysis
3.8
Common
Terminology
in
4
Activation
Modes
4.1
Photoinduced
Electron
Transfer
4.2
5
Conclusions
Outlook
Язык: Английский
Emerging Activation Modes and Techniques in Visible-Light-Photocatalyzed Organic Synthesis
Synthesis,
Год журнала:
2022,
Номер
55(02), С. 193 - 231
Опубликована: Сен. 16, 2022
Abstract
Visible
light
photocatalysis
has
evolved
into
a
promising
mild
and
sustainable
strategy
to
access
radicals.
This
field
unlocks
formerly
challenging
or
even
previously
inaccessible
organic
transformations.
In
this
review,
an
overview
of
some
lesser-known
modes
photochemical
activation
molecules
several
emerging
techniques
within
the
versatile
visible
are
discussed.
These
illustrated
by
selected
photocatalytic
reactions,
with
particular
attention
given
reaction
mechanism.
1
Introduction
2
Advanced
Photoactivation
Modes
2.1
Photoinduced
Hydrogen-Atom
Transfer
2.2
Proton-Coupled
Electron
2.3
Donor-Acceptor
Organic
Substrates
2.4
Excited-State
Transition
Metal
Catalysis
3
Emerging
Techniques
3.1
Dual
3.2
Excited
Radical
Ion
Photocatalysis
3.3
Upconversion
Strategies
Other
Two-Photon
Mechanisms
3.4
Red
Near-Infrared
4
Conclusions
Outlook
Язык: Английский
Ni‐Catalyzed/mediated C−X (X=N, O, S) Bond Formation Chelation‐Assisted by Bidentate Directing Groups
ChemistrySelect,
Год журнала:
2024,
Номер
9(5)
Опубликована: Янв. 29, 2024
Abstract
Recently,
transition‐metal‐catalyzed
C−H
functionalization
has
attracted
significant
attention
due
to
its
potential
applications
in
different
fields.
Among
metals,
nickel
is
regarded
as
a
more
sustainable
3d‐transition
metal,
which
been
widely
explored.
Therefore,
this
review
focuses
on
the
recent
advances
field
of
nickel‐catalyzed
assisted
with
bidentate
directing
groups
(DGs)
construct
C−X
(N,
S,
O)
bond.
The
latest
advancement
catalysed
bond
are
reviewed
and
covers
literatures
from
2015–2022.
In
addition,
substrate
scope
limitations
well
partial
mechanism
discussed.
Язык: Английский
Green light-mediated dual eosin Y/PdII-catalyzed C(sp2)–H arylation of N–H unprotected 2-arylquinazolinones
Organic & Biomolecular Chemistry,
Год журнала:
2024,
Номер
22(27), С. 5540 - 5545
Опубликована: Янв. 1, 2024
An
eosin
Y/Pd
II
dual
catalytic
highly
regio-
and
chemoselective
C(sp
2
)–H
monoarylation
of
N–H
unprotected
2-phenyl
quinazolinones
with
diazonium
salts
under
visible
light
irradiation
is
disclosed.
Язык: Английский
Visible Light-Promoted β-Functionalization of Carbonyl Compounds in the Presence of Organic Dyes
The Journal of Organic Chemistry,
Год журнала:
2023,
Номер
88(20), С. 14283 - 14291
Опубликована: Окт. 4, 2023
Herein,
we
investigate
the
use
of
organic
photocatalysts
in
visible
light-promoted
β-functionalization
carbonyl
compounds.
In
particular,
studied
addition
aliphatic
aldehydes
to
α,β-unsaturated
compounds
(β-Michael
addition),
and
reaction
cyclic
ketones
with
either
(β-aldol
condensation)
or
imines
(β-Mannich
reaction).
Among
dyes
tested,
donor–acceptor
cyanoarenes
gave
best
results,
promoting
transformations
interest
moderate
good
yields.
The
scope
was
investigated
on
substrates
different
steric
electronic
properties.
Fluorescence
quenching
analysis
(Stern–Volmer
experiments)
led
us
propose
for
these
reactions
a
reductive
mechanism
involving
transient
5πe–
activation
mode.
Язык: Английский