Advanced Materials,
Год журнала:
2023,
Номер
35(52)
Опубликована: Июль 5, 2023
In
recent
years
it
is
shown
that
mechanochemical
strategies
can
be
beneficial
in
directed
conversions
of
organic
compounds.
Finding
new
reactions
proved
difficult,
and
due
to
the
lack
mechanistic
understanding
reaction
events,
respective
efforts
have
mostly
remained
empirical.
Spectroscopic
techniques
are
crucial
shedding
light
on
these
questions.
this
overview,
opportunities
challenges
solid-state
nuclear
magnetic
resonance
(NMR)
spectroscopy
field
mechanochemistry
discussed.
After
a
brief
discussion
basics
high-resolution
NMR
under
magic-angle
spinning
(MAS)
conditions,
seven
for
presented,
ranging
from
ex
situ
approaches
structurally
elucidated
products
obtained
by
milling
potential
limitations
approaches.
Particular
strengths
NMR,
instance
differentiating
polymorphs,
NMR-crystallographic
structure-determination
protocols,
or
detecting
weak
noncovalent
interactions
molecular-recognition
events
employing
proton-detected
experiments
at
fast
MAS
frequencies,
ChemSusChem,
Год журнала:
2021,
Номер
14(10), С. 2145 - 2162
Опубликована: Апрель 9, 2021
In
recent
years,
mechanochemistry
has
been
growing
into
a
widely
accepted
alternative
for
chemical
synthesis.
addition
to
their
efficiency
and
practicality,
mechanochemical
reactions
are
also
recognized
sustainability.
The
association
between
Green
Chemistry
often
originates
from
the
solvent-free
nature
of
most
protocols,
which
can
reduce
waste
production.
However,
satisfies
more
than
one
Principles
Chemistry.
this
Review
we
will
present
series
examples
that
clearly
illustrate
how
significantly
contribute
fulfillment
in
holistic
manner.
Advanced Synthesis & Catalysis,
Год журнала:
2021,
Номер
363(5), С. 1246 - 1271
Опубликована: Янв. 21, 2021
Abstract
Mechanochemical
reactions
by
milling,
grinding
or
other
types
of
mechanical
action
have
emerged
as
a
salient
green
approach
because
its
wide
applications
towards
academic
and
industrial
chemical
communities
in
sustainable
solvent‐free/solvent‐less
processes.
Liquid‐assisted
(LAG)
an
extension
traditional
solvent‐free
mechanochemical
techniques
which
small
amount
liquid
is
used
additive
to
enhance
and/or
control
reactivity,
has
been
fruitfully
applied
the
screening
inclusion
compounds,
cocrystals,
salts,
solvates,
polymorphs.
However,
utilization
this
important
technique
synthesis
pharmaceutically
biologically
relevant
targets
was
not
adequately
investigated.
This
review
article
summarizes
overview
latest
development
LAG
approaches
active
pharmaceutical
ingredients
(API)
drug‐like
fragments,
highlights
superiority
versus
conventional
syntheses.
magnified
image
Mechanochemical
transformations
have
made
chemists
enter
unknown
territories,
forcing
a
different
chemistry
perspective.
While
questioning
or
revisiting
familiar
concepts
belonging
to
solution
chemistry,
mechanochemistry
has
broken
new
ground,
especially
in
the
panorama
of
organic
synthesis.
Not
only
does
it
foster
"thinking
outside
box",
but
also
opened
reaction
paths,
allowing
overcome
weaknesses
traditional
exactly
where
use
well-established
solution-based
methodologies
rules
out
progress.
In
this
Review,
reader
is
introduced
an
intriguing
research
subject
not
yet
fully
explored
and
waiting
for
improved
understanding.
Indeed,
study
mainly
focused
on
that,
although
impossible
solution,
become
possible
under
mechanochemical
processing
conditions,
simultaneously
entailing
innovation
expanding
chemical
space.
Frontiers in Chemistry,
Год журнала:
2021,
Номер
9
Опубликована: Май 26, 2021
Over
the
decades,
application
of
mechanical
force
to
influence
chemical
reactions
has
been
called
by
various
names:
mechanochemistry,
tribochemistry,
alloying,
name
but
a
few.
The
evolution
these
terms
largely
mirrored
understanding
field.
But
what
is
meant
terms,
why
have
they
evolved,
and
does
it
really
matter
how
process
called?
Which
parameters
should
be
defined
describe
unambiguously
experimental
conditions
such
that
others
can
reproduce
results,
or
allow
meaningful
comparison
between
processes
explored
under
different
conditions?
Can
information
on
encoded
in
clear,
concise,
self-explanatory
way?
We
address
questions
this
Opinion
contribution,
which
we
hope
will
spark
timely
constructive
discussion
across
international
mechanochemical
community.
Chemical Society Reviews,
Год журнала:
2022,
Номер
51(11), С. 4243 - 4260
Опубликована: Янв. 1, 2022
Reactive
extrusion
provides
a
scale-up
opportunity
to
turn
mechanochemical
process
from
ball-mill
into
continuous
flow.
This
tutorial
review
summarises
some
of
the
early
ground-breaking
work
in
this
area.
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(19), С. 6680 - 6714
Опубликована: Янв. 1, 2023
The
quantitative
assessment
of
the
greenness
mechanochemical
processes
for
green
metrics
were
calculated
is
herein
reported.
A
general
introduction
to
topic,
variables
influencing
reaction
outcome
and,
an
outlook
are
also
provided.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2022,
Номер
10(4), С. 1430 - 1439
Опубликована: Янв. 20, 2022
The
scale-up
of
mechanochemical
methods
could
play
a
transformative
role
in
making
manufacturing
processes
the
pharmaceutical
industry
greener
by
eliminating
solvent
use
and
recovery.
Combined
with
energy-efficient
continuous
processing
that
consolidates
reaction
steps,
mechanochemistry's
environmental
economic
benefits
may
translate
across
product
supply
chains.
Here,
we
evaluate
numerous
sustainability
green
chemistry
metrics
for
producing
nitrofurantoin,
an
active
ingredient
(API),
via
twin-screw
extrusion
(TSE)
conventional
solvent-batch
synthesis
methods.
We
find
significant
reduction
all
TSE
including
energy,
climate
change,
human
ecological
health,
as
well
cost
due
to
reducing
excess
reactant
consumption
solvents
while
maintaining
high
selectivity.
In
addition,
replacing
direct
energy
source
drive
chemical
from
mostly
thermal
electrical
sources
does
not
increase
net
life
cycle
consumed
produce
functionally
equivalent
API.
conclude
holds
multiple
APIs
potentially
other
products.
Synthesis,
Год журнала:
2023,
Номер
55(16), С. 2439 - 2459
Опубликована: Май 3, 2023
Abstract
Although
known
for
millennia,
it
is
only
recently
that
mechanochemistry
has
received
serious
attention
by
chemists.
Indeed,
during
the
past
15
years
an
extraordinary
number
of
reports
concerning
solid-state
chemical
transformations
through
grinding
and
milling
techniques
have
been
recorded.
This
short
review
discusses
circumstances
led
this
renaissance,
highlighting
present
intense
interest
in
so-called
green
chemistry,
enabling
capacity
to
handle
insoluble
substrates,
identification
profound
influence
additives
can
on
mechanochemically
activated
reactions.
The
core
account
focuses
salient
developments
synthetic
organic
especially
amino
acid
peptide
mechanosynthesis,
successful
employment
mechanochemical
activation
combination
with
asymmetric
organocatalysis,
promising
enzymatic
whole
cell
biocatalysis,
remarkable
achievement
multicomponent
selective
reactions
via
complex,
multistep
reaction
pathways,
mechanosynthesis
representative
heterocycles.
final
section
comments
some
pending
tasks
area,
such
as
scaling-up
processes
be
practical
use
industry,
requirement
easier
more
efficient
control
parameters
monitoring
devices,
consequently
careful
analysis
additional
procedures
a
proper
understanding
phenomena.
1
Introduction
2
Brief
History
Mechanochemistry
3
Milling
Equipment
Reaction
Parameters
4
Attributes
That
Propelled
Its
Present
Renaissance
4.1
Enormous
Attention
Being
Presently
Paid
Sustainable
Chemistry
4.2
Reduced
Energy
Consumption
4.3
Additive-Based
4.4
Handling
Insoluble
Reactants
4.5
‘Impossible’
Reactions
Are
Successful
4.6
Air-
Water-Sensitive
Reagents
Ball
5
Salient
Developments
Mechanochemical
Activation
Synthetic
Organic
5.1
Amino
Acid
Peptide
Mechanosynthesis
5.2
Asymmetric
Synthesis
Organocatalysis
under
Ball-Milling
Conditions
5.3
Mechanoenzymology
5.4
Multicomponent
Activated
5.5
Heterocycles
Modification
6
Future
Directions
6.1
Scaling-Up
Protocols
6.2
Temperature-Controlled
6.3
Understanding
Transformations
6.4
Emerging
Techniques
7
Conclusions
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(44)
Опубликована: Апрель 28, 2023
Mechanochemistry
provides
an
environmentally
benign
platform
to
develop
more
sustainable
chemical
processes
by
limiting
raw
materials,
energy
use,
and
waste
generation
while
using
physically
smaller
equipment.
A
continuously
growing
research
community
has
steadily
showcased
examples
of
beneficial
mechanochemistry
applications
at
both
the
laboratory
preparative
scale.
In
contrast
solution-based
chemistry,
mechanochemical
have
not
yet
been
standardized,
thus
scaling
up
is
still
a
nascent
discipline.
The
purpose
this
Minireview
highlight
similarities,
differences
challenges
various
approaches
that
successfully
applied
for
range
scales.
We
hope
provide
discussion
starting
point
those
interested
in
further
developing
commercial
use
and/or
industrialisation.