Organic Letters,
Год журнала:
2019,
Номер
21(5), С. 1412 - 1416
Опубликована: Фев. 21, 2019
Palladium-catalyzed
transfer
semihydrogenation
of
alkynes
using
H2O
as
the
hydrogen
source
and
Mn
reducing
reagent
is
developed,
affording
cis-
trans-alkenes
selectively
under
mild
conditions.
In
addition,
this
method
provides
an
efficient
way
to
access
various
cis-1,2-dideuterioalkenes
trans-1,2-dideuterioalkenes
by
D2O
instead
H2O.
Journal of Medicinal Chemistry,
Год журнала:
2019,
Номер
62(11), С. 5276 - 5297
Опубликована: Янв. 14, 2019
The
use
of
deuteration
in
medicinal
chemistry
has
exploded
the
past
years,
and
FDA
recently
approved
first
deuterium-labeled
drug.
Precision
goes
beyond
pure
simple
amelioration
pharmacokinetic
parameters
a
drug
might
provide
an
opportunity
when
facing
problems
terms
metabolism-mediated
toxicity,
interactions,
low
bioactivation.
deuterium
is
even
broader,
offering
to
lower
degree
epimerization,
reduce
dose
coadministered
boosters,
discover
compounds
where
basis
for
mechanism
action.
Nevertheless,
designing,
synthesizing,
developing
successful
deuterated
far
from
straightforward,
translation
concept
practice
often
unpredictable.
This
Perspective
provides
overview
recent
developments
deuteration,
with
focus
on
clinical
candidates,
highlights
both
opportunities
challenges
this
strategy.
Chemical Reviews,
Год журнала:
2021,
Номер
122(2), С. 2752 - 2906
Опубликована: Авг. 10, 2021
Photoinduced
chemical
transformations
have
received
in
recent
years
a
tremendous
amount
of
attention,
providing
plethora
opportunities
to
synthetic
organic
chemists.
However,
performing
photochemical
transformation
can
be
quite
challenge
because
various
issues
related
the
delivery
photons.
These
challenges
barred
widespread
adoption
steps
industry.
past
decade,
several
technological
innovations
led
more
reproducible,
selective,
and
scalable
photoinduced
reactions.
Herein,
we
provide
comprehensive
overview
these
exciting
advances,
including
flow
chemistry,
high-throughput
experimentation,
reactor
design
scale-up,
combination
photo-
electro-chemistry.
Chemical Reviews,
Год журнала:
2022,
Номер
122(6), С. 6634 - 6718
Опубликована: Фев. 18, 2022
Organic
compounds
labeled
with
hydrogen
isotopes
play
a
crucial
role
in
numerous
areas,
from
materials
science
to
medicinal
chemistry.
Indeed,
while
the
replacement
of
by
deuterium
gives
rise
improved
absorption,
distribution,
metabolism,
and
excretion
(ADME)
properties
drugs
enables
preparation
internal
standards
for
analytical
mass
spectrometry,
use
tritium-labeled
is
key
technique
all
along
drug
discovery
development
pharmaceutical
industry.
For
these
reasons,
interest
new
methodologies
isotopic
enrichment
organic
molecules
extent
their
applications
are
equally
rising.
In
this
regard,
Review
intends
comprehensively
discuss
developments
area
over
last
years
(2017–2021).
Notably,
besides
fundamental
isotope
exchange
(HIE)
reactions
isotopically
analogues
common
reagents,
plethora
reductive
dehalogenative
deuteration
techniques
other
transformations
incorporation
emerging
now
part
labeling
toolkit.
Journal of the American Chemical Society,
Год журнала:
2020,
Номер
142(24), С. 10571 - 10591
Опубликована: Май 21, 2020
The
ability
to
differentiate
between
highly
similar
C–H
bonds
in
a
given
molecule
remains
fundamental
challenge
organic
chemistry.
In
particular,
the
lack
of
sufficient
steric
and
electronic
differences
located
distal
functional
groups
has
prevented
development
site-selective
catalysts
with
broad
scope.
An
emerging
approach
circumvent
this
obstacle
is
utilize
distance
target
bond
coordinating
group,
along
geometry
cyclic
transition
state
directed
activation,
as
core
molecular
recognition
parameters
multiple
bonds.
Perspective,
we
discuss
advent
recent
advances
concept.
We
cover
wide
range
transition-metal-catalyzed,
template-directed
remote
activation
reactions
alcohols,
carboxylic
acids,
sulfonates,
phosphonates,
amines.
Additionally,
review
eminent
examples
which
take
advantage
non-covalent
interactions
achieve
regiocontrol.
Continued
advancement
distance-
geometry-based
differentiation
for
regioselective
functionalization
may
lead
ultimate
realization
editing:
freedom
modify
molecules
at
any
site,
order.
Chemical Reviews,
Год журнала:
2021,
Номер
122(2), С. 2907 - 2980
Опубликована: Сен. 24, 2021
In
the
pursuit
of
new
pharmaceuticals
and
agrochemicals,
chemists
in
life
science
industry
require
access
to
mild
robust
synthetic
methodologies
systematically
modify
chemical
structures,
explore
novel
space,
enable
efficient
synthesis.
this
context,
photocatalysis
has
emerged
as
a
powerful
technology
for
synthesis
complex
often
highly
functionalized
molecules.
This
Review
aims
summarize
published
contributions
field
from
industry,
including
research
industrial-academic
partnerships.
An
overview
developed
strategic
applications
synthesis,
peptide
functionalization,
isotope
labeling,
both
DNA-encoded
traditional
library
is
provided,
along
with
summary
state-of-the-art
photoreactor
effective
upscaling
photocatalytic
reactions.
Angewandte Chemie International Edition,
Год журнала:
2018,
Номер
58(1), С. 312 - 316
Опубликована: Окт. 23, 2018
We
report
a
general,
practical,
and
scalable
means
of
preparing
deuterated
aldehydes
from
aromatic
aliphatic
carboxylic
acids
with
D2
O
as
an
inexpensive
deuterium
source.
The
use
Ph3
P
O-atom
transfer
reagent
can
facilitate
the
deoxygenation
acids,
while
Ph2
POEt
is
better
for
acids.
highly
precise
complex
makes
this
protocol
promising
late-stage
deoxygenative
deuteration
natural
product
derivatives
pharmaceutical
compounds.
Nature,
Год журнала:
2021,
Номер
600(7889), С. 444 - 449
Опубликована: Дек. 15, 2021
Abstract
Tritium
labelling
is
a
critical
tool
for
investigating
the
pharmacokinetic
and
pharmacodynamic
properties
of
drugs,
autoradiography,
receptor
binding
occupancy
studies
1
.
gas
preferred
source
tritium
preparation
labelled
molecules
because
it
available
in
high
isotopic
purity
2
The
introduction
labels
from
commonly
achieved
by
heterogeneous
transition-metal-catalysed
tritiation
aryl
(pseudo)halides.
However,
catalysts
such
as
palladium
supported
on
carbon
operate
through
reaction
mechanism
that
also
results
reduction
other
functional
groups
are
prominently
featured
pharmaceuticals
3
Homogeneous
can
react
chemoselectively
with
(pseudo)halides
but
have
not
been
used
hydrogenolysis
reactions
because,
after
required
oxidative
addition,
they
cannot
split
dihydrogen
4
Here
we
report
homogenous
well
defined,
molecular
catalyst.
We
show
how
thianthrene
leaving
group—which
be
introduced
selectively
into
late-stage
C–H
functionalization
5
—differs
its
coordinating
ability
to
relevant
palladium(II)
conventional
enable
previously
unrealized
catalysis
dihydrogen.
This
distinct
reactivity
combined
chemoselectivity
defined
catalyst
enables
small-molecule
contain
functionality
may
otherwise
tolerated
catalysts.
does
require
an
inert
atmosphere
or
dry
conditions
therefore
practical
robust
execute,
could
immediate
impact
discovery
development
pharmaceuticals.