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
Synthesis of Diverse 4‐Pyrrolin‐2‐ones by Electrochemically Induced Dehydrogenative Regioselective Cyclization of 3‐Aza‐1,5‐dienes and 1,3‐Dicarbonyl Compounds
European Journal of Organic Chemistry,
Год журнала:
2024,
Номер
27(11)
Опубликована: Янв. 20, 2024
Abstract
A
practical
and
mild
electrochemical
dehydrogenative
regioselective
cyclization
method
has
been
established
for
the
synthesis
of
4‐pyrrolin‐2‐ones
using
3‐aza‐1,5‐dienes
1,3‐dicarbonyl
compounds
as
substrates.
This
protocol
is
catalyst‐free,
metal‐free,
does
not
require
oxidizing
agents.
It
exhibits
wide
substrate
compatibility
can
be
easily
scaled
up
to
gram
scale.
Язык: Английский
Photosensitized Imino-Thiocyanation of Alkenes
Organic Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
A
metal-free
photosensitized
1,2-imino-thiocyanation
of
olefins
has
been
established
by
using
the
easily
accessible
bifunctional
reagent
S-cyano-N-(diphenylmethylene)
thiohydroxylamine.
wide
range
were
successfully
transformed
into
corresponding
β-iminothiocyanates
in
moderate
to
high
yields.
This
protocol
stands
out
for
its
nature,
broad
substrate
compatibility,
and
atom
step
economy,
providing
an
effective
strategy
assembling
β-amino
thiocyanate-containing
scaffolds.
Язык: Английский
Visible-Light-Promoted Aerobic α-Thiocyanation of Carbonyl Compounds with Ammonium Thiocyanate
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(5), С. 3453 - 3470
Опубликована: Фев. 9, 2024
In
the
present
study,
we
successfully
developed
an
efficient
thiocyanation
of
carbonyl
compounds
by
using
low-toxicity
and
inexpensive
ammonium
thiocyanate
as
source
under
visible
light
in
air
(O2)
at
room
temperature.
This
unified
strategy
is
very
facile
for
various
compound
derivatives
(β-keto
esters,
β-keto
amides,
pyrazo-5-ones,
isoxazol-5-ones,
etc.).
More
importantly,
reaction
proceeded
smoothly
without
addition
a
photocatalyst
strong
oxidant,
ultimately
minimizing
production
chemical
waste.
Furthermore,
this
green
sustainable
synthetic
chemistry
can
be
used
late-stage
functionalization
(LSF)
biorelevant
compounds,
which
offers
unique
opportunities
to
achieve
smooth
clean
drugs
mild
conditions.
Язык: Английский
Electrochemical synthesis of CN-substituted imidazo[1,5-a]pyridines via a cascade process using NH4SCN as both an electrolyte and a non-trivial cyanating agent
Organic Chemistry Frontiers,
Год журнала:
2023,
Номер
11(2), С. 327 - 335
Опубликована: Ноя. 21, 2023
An
electrochemical
cascade
of
oxidation/cyclization
pyridine-2-carboxaldehydes
with
benzylamines
involving
in
situ
cyanation
NH
4
SCN
to
afford
1-cyano-imidazo[1,5-
a
]pyridines
was
developed.
Язык: Английский
Highly Selective C–N and C–S Dual Functionalization of 1,3-Dicarbonyl Derivatives Using TBHP as an Oxidant
The Journal of Organic Chemistry,
Год журнала:
2024,
Номер
89(13), С. 9371 - 9380
Опубликована: Июнь 24, 2024
A
direct
electrosynthesis/photocatalyst-free,
atom-economical,
and
efficient
method
for
the
selective
synthesis
of
(E)-3-amino-2-thiocyanato-α,β-unsaturated
carbonyl
compounds
is
described
through
a
given
protocol.
The
present
approach
features
use
inexpensive
ammonium
thiocyanate
to
achieve
dual
functionalization
1,3-dicarbonyl
using
TBHP
as
an
oxidant,
providing
rapid
practical
route
formation
both
C–N
C–S
bonds
via
radical
process.
This
offers
broad
substrate
scope
with
excellent
yield
allows
further
exploration
products
construct
heterocyclic
other
functionalities.
Язык: Английский
Dibenzoylperoxide‐Mediated Oxidative α‐Thio/Seleno‐Cyanation of β‐Ketoesters and Oxindoles
European Journal of Organic Chemistry,
Год журнала:
2023,
Номер
26(46)
Опубликована: Окт. 19, 2023
Abstract
We
herein
report
a
protocol
for
the
α‐thio‐
and
α‐seleno‐cyanation
of
different
cyclic
β‐ketoesters
oxindoles
by
using
NaSCN
or
KSeCN
as
easily
accessible
inorganic
nucleophilic
S(e)CN
sources
under
oxidative
conditions.
Key
to
success
both
transformations
is
use
dibenzoylperoxide
an
oxidant
allowing
coupling
two
inherently
species
operationally
simple
conditions
in
high
yields
with
broad
functional
group
tolerance.
Язык: Английский
Aspects of use and features of the predatorymite Neoseiulus longispinosus (Evans, 1952) (Mesostigmata: family Phytoseiidae, subfamily. Amblyseiinae) in comparison to N. californicus
BIO Web of Conferences,
Год журнала:
2024,
Номер
93, С. 01014 - 01014
Опубликована: Янв. 1, 2024
The
predatory
mite
Neoseiulus
longispinosus
(Evans,
1952)
isused
as
a
specialized
acariphage
on
vegetable,
flower
and
berry
crops
inAsia.
In
protected
ground
of
European
agriculture,
N.
californicus
is
one
ofthe
effective
predators
spider
mites
(Tetranychidae).
periodicity
ofattacks
the
victim
depends
temperature.
predator
prefers
tohunt
immature
individuals
T.
urticae
,
often
ignoring
adult
female
spidermites
if
there
choice.
does
not
show
preferencebetween
eggs
nymphs.
However,
density
spidermite
population
increases,
switches
its
diet
from
theeggs
to
larvae
Adult
females
exhibit
atype
2
functional
response
both
Pyrethroidand
avermectin
substances
are
highly
toxic
populations,
despitelow
acute
toxicity
many
other
insecticides
(Actara,
Envidor,
etc.).
Язык: Английский