Angewandte Chemie International Edition,
Journal Year:
2019,
Volume and Issue:
58(52), P. 18830 - 18834
Published: Oct. 15, 2019
A
photochemical
method
for
converting
aliphatic
alcohols
into
boronic
esters
is
described.
Preactivation
of
the
alcohol
as
a
2-iodophenyl-thionocarbonate
enables
novel
Barton-McCombie-type
radical
deoxygenation
that
proceeds
efficiently
with
visible
light
irradiation
and
without
requirement
photocatalyst,
initiator,
or
tin
silicon
hydrides.
The
resultant
alkyl
intercepted
by
bis(catecholato)diboron,
furnishing
from
diverse
range
structurally
complex
alcohols.
Organic Letters,
Journal Year:
2018,
Volume and Issue:
21(1), P. 325 - 329
Published: Dec. 21, 2018
A
visible-light-initiated
α-perfluoroalkyl-β-heteroarylation
of
various
alkenes
with
perfluoroalkyl
iodides
and
quinoxalin-2(1H)-ones
is
presented.
This
three-component
radical
cascade
reaction
allows
an
efficient
synthesis
a
range
containing
quinoxalin-2(1H)-one
derivatives
in
moderate
to
excellent
yields
under
mild
conditions.
Reactions
proceed
via
acidic
aminyl
radicals
that
are
readily
deprotonated
give
the
corresponding
anions
able
sustain
chain
as
single
electron
transfer
reducing
reagents.
Hence,
overall
classifies
electron-catalyzed
process.
Chemical Science,
Journal Year:
2019,
Volume and Issue:
10(37), P. 8503 - 8518
Published: Jan. 1, 2019
Efficient
radical
routes
to
important
alkyl
and
aryl
boronic
esters
have
been
developed
over
the
past
few
years.
Such
reactions
are
complementary
existing
transition-metal
catalysed
cross
coupling
processes.
Chemical Science,
Journal Year:
2018,
Volume and Issue:
10(1), P. 161 - 166
Published: Oct. 2, 2018
An
efficient
transition-metal
free
C–C
bond
cleavage/borylation
of
cycloketone
oxime
esters
has
been
described.
In
this
reaction,
the
B2(OH)4
reagent
not
only
served
as
boron
source
but
also
acted
an
electron
donor
through
formation
a
complex
with
DMAc-like
Lewis
base.
Journal of the American Chemical Society,
Journal Year:
2019,
Volume and Issue:
141(23), P. 9124 - 9128
Published: May 29, 2019
The
preparation
of
arylboronates
from
unactivated
aryl
chlorides
in
a
transition-metal-free
manner
is
rather
challenging.
There
are
only
few
examples
to
achieve
this
goal
by
using
ultraviolet
irradiation.
Based
on
the
mechanistic
understanding
diboron/methoxide/pyridine
reaction
system,
we
achieved
photoactivation
situ
generated
super
electron
donor
and
developed
visible-light-induced
organocatalytic
method
for
efficient
borylation
chlorides.
Angewandte Chemie International Edition,
Journal Year:
2019,
Volume and Issue:
58(52), P. 18830 - 18834
Published: Oct. 15, 2019
A
photochemical
method
for
converting
aliphatic
alcohols
into
boronic
esters
is
described.
Preactivation
of
the
alcohol
as
a
2-iodophenyl-thionocarbonate
enables
novel
Barton-McCombie-type
radical
deoxygenation
that
proceeds
efficiently
with
visible
light
irradiation
and
without
requirement
photocatalyst,
initiator,
or
tin
silicon
hydrides.
The
resultant
alkyl
intercepted
by
bis(catecholato)diboron,
furnishing
from
diverse
range
structurally
complex
alcohols.
