European Journal of Inorganic Chemistry,
Journal Year:
2021,
Volume and Issue:
2022(3)
Published: Nov. 19, 2021
Abstract
Ferrocene‐1,1′‐dithiol
reacts
with
PCl
3
and
P(NMe
2
)
to
give
[3]ferrocenophanes
SPS‐
ansa
‐bridges
comprising
potentially
reactive
P−Cl
P−N
bonds
at
the
central
bridge
atom.
The
products
were
characterized
by
NMR
data
single‐crystal
XRD
studies.
P‐chloro‐derivative
exists
both
in
solid
state
solution
as
a
mixture
of
two
energetically
nearly
degenerate
conformers
different
stereochemical
disposition
‐bridge.
Activation
parameters
for
dynamic
equilibration
between
isomers
determined
spectroscopy.
Computational
studies
suggest
that
isomerization
proceeds
via
torsional
motion
bridging
SPS‐unit
rather
than
configuration
inversion
phosphorus
European Journal of Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
27(18)
Published: March 13, 2024
Abstract
A
series
of
substituted
ferrocenyl
boron
derivatives
was
synthesized.
The
oxidation
the
unit
resulted
in
a
significant
increase
boron‐centered
Lewis
acidity.
neutral
and
cationic
acids
were
characterized
by
NMR
spectroscopy,
crystal
structure
analysis
computational
methods.
new
then
applied
Meinwald
rearrangement
epoxides,
predominantly
furnishing
aldehydes
as
kinetic
products.
Chemistry - A European Journal,
Journal Year:
2021,
Volume and Issue:
27(61), P. 15019 - 15020
Published: Oct. 21, 2021
3MET
:
In
this
Guest
Editorial,
M.
H.
Prosenc,
Kappes,
and
G.
Niedner‐Schatteburg,
present
the
latest
work
from
transregional
collaborative
research
center
3MET.de
founded
in
2009
located
at
TU
Kaiserslautern
(TUK)
Karlsruhe
Institute
of
Technology
(KIT).
Angewandte Chemie,
Journal Year:
2022,
Volume and Issue:
134(30)
Published: May 30, 2022
Abstract
Although
ylides
are
commonly
used
reagents
in
organic
synthesis,
the
parent
methylphosphine
MePH
2
only
exists
its
phosphine
form
condensed
phase.
Its
ylide
tautomer
H
3
P
+
−CH
−
is
considerably
higher
energy.
Here,
we
report
on
formation
of
bis(sulfonyl)methyl‐substituted
phosphines
type
(RO
S)
C(H)−PR
2,
which
stable
PH
under
ambient
conditions,
amongst
first
examples
an
acyclic
form.
Depending
exact
substitution
pattern
equilibrium
between
and
or
exist
as
one
both
extremes.
These
were
found
to
be
ideal
starting
systems
for
facile
α‐carbanionic
phosphines.
The
carbanion‐functionalization
leads
a
switch
from
electron‐poor
highly
electron‐rich
with
strong
donor
abilities
high
basicities.
Thus,
readily
react
different
electrophiles
exclusively
at
phosphorus
atom
not
carbanionic
center.
Furthermore,
anionic
nature
allows
zwitterionic
complexes
demonstrated
by
isolation
gold(I)
complex
cationic
metal
gold
center
catalytic
activity
hydroamination
alkyne
without
requiring
further
activation
step.
European Journal of Inorganic Chemistry,
Journal Year:
2021,
Volume and Issue:
2022(3)
Published: Nov. 19, 2021
Abstract
Ferrocene‐1,1′‐dithiol
reacts
with
PCl
3
and
P(NMe
2
)
to
give
[3]ferrocenophanes
SPS‐
ansa
‐bridges
comprising
potentially
reactive
P−Cl
P−N
bonds
at
the
central
bridge
atom.
The
products
were
characterized
by
NMR
data
single‐crystal
XRD
studies.
P‐chloro‐derivative
exists
both
in
solid
state
solution
as
a
mixture
of
two
energetically
nearly
degenerate
conformers
different
stereochemical
disposition
‐bridge.
Activation
parameters
for
dynamic
equilibration
between
isomers
determined
spectroscopy.
Computational
studies
suggest
that
isomerization
proceeds
via
torsional
motion
bridging
SPS‐unit
rather
than
configuration
inversion
phosphorus
