Diverse Catalytic Applications of Phosphine Oxide‐Based Metal Complexes
ChemCatChem,
Год журнала:
2024,
Номер
16(22)
Опубликована: Авг. 17, 2024
Abstract
Phosphine
oxides
are
an
interesting
class
of
compounds
possessing
tetracoordinate
and
pentavalent
phosphorus
atoms
have
been
employed
in
a
wide
range
applications
including
reagents
organic
synthesis,
metal
extractants,
flame
retardants,
pharmaceuticals,
bioactivity
studies.
Among
all,
the
degree
basicity
phosphoryl
oxygen
driven
by
nature
substituents
influences
electronic
properties
central
complex
toward
diversified
catalytic
processes.
Further,
presence
heteroatoms
adjacent
to
atom
enhances
nucleophilicity
atom.
In
view
this,
present
review
covers
past
two
decades
remarkable
versatility
P=O‐based
complexes
describes
governing
factors
influencing
structural
resultant
coordination
behavior.
Interestingly,
some
P=O
bond
distances
either
longer
or
shorter
compared
their
free
ligands,
indicating
activity.
These
can
effectively
catalyze
chemical
reactions
polymerizations,
C−C
Si−C
activations,
oxidation,
reduction,
hydroformylation,
hydrophosphination,
hydrogenation
cyclization
reactions.
Furthermore,
this
emphasizes
impact
substituents,
solvents,
additives,
light,
temperature
on
efficiency.
Язык: Английский
Chemo‐, Regio‐ and Stereoselective Preparation of (Z)‐2‐Butene‐1,4‐Diol Monoesters via Pd‐Catalyzed Decarboxylative Acyloxylation
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(39)
Опубликована: Май 13, 2024
(Z)-alkenes
are
useful
synthons
but
thermodynamically
less
stable
than
their
(E)-isomers
and
typically
more
difficult
to
prepare.
The
synthesis
of
1,4-hetero-bifunctionalized
is
particularly
challenging
due
the
inherent
regio-
stereoselectivity
issues.
Herein
we
demonstrate
a
general,
chemoselective
direct
(Z)-2-butene-1,4-diol
monoesters.
protocol
operates
within
Pd-catalyzed
decarboxylative
acyloxylation
regime
involving
vinyl
ethylene
carbonates
(VECs)
various
carboxylic
acids
as
reaction
partners
under
mild
operationally
attractive
conditions.
newly
developed
process
allows
access
structurally
diverse
pool
monoesters
in
good
yields
with
excellent
stereoselectivity.
Various
synthetic
transformations
obtained
how
these
great
use
rapidly
diversify
portfolio
formal
desymmetrized
(Z)-alkenes.
Язык: Английский