European Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
26(42)
Published: Aug. 25, 2023
Abstract
5‐Halo‐1,2,3‐triazoles
are
important
scaffolds
in
organic
chemistry,
but
current
click
reactions
cannot
produce
1,4,5‐trisubstituted
5‐chloro‐1,2,3‐triazoles
a
simple
way.
Herein,
we
disclosed
Cu(I)‐catalyzed
interrupted
reaction,
using
N
‐chlorophthalimide
as
an
electrophilic
chlorine
source,
enabling
the
facile
synthesis
of
one
step
from
readily
available
terminal
alkynes
and
azides.
Complete
control
regioselectivities
with
broad
substrate
scope
was
accomplished
by
this
approach.
Furthermore,
novel
epoxidation
developed
5‐chloro‐triazole
substrate,
which
could
be
further
applied
various
transformations.
European Journal of Organic Chemistry,
Journal Year:
2023,
Volume and Issue:
26(42)
Published: Aug. 25, 2023
Abstract
5‐Halo‐1,2,3‐triazoles
are
important
scaffolds
in
organic
chemistry,
but
current
click
reactions
cannot
produce
1,4,5‐trisubstituted
5‐chloro‐1,2,3‐triazoles
a
simple
way.
Herein,
we
disclosed
Cu(I)‐catalyzed
interrupted
reaction,
using
N
‐chlorophthalimide
as
an
electrophilic
chlorine
source,
enabling
the
facile
synthesis
of
one
step
from
readily
available
terminal
alkynes
and
azides.
Complete
control
regioselectivities
with
broad
substrate
scope
was
accomplished
by
this
approach.
Furthermore,
novel
epoxidation
developed
5‐chloro‐triazole
substrate,
which
could
be
further
applied
various
transformations.