Ferrocene-containing tetrahydropyridazines via domino chemistry
Journal of Molecular Structure,
Год журнала:
2025,
Номер
unknown, С. 142145 - 142145
Опубликована: Март 1, 2025
Access to C5-Sulfonylated Tetrahydropyridazines via Photoinduced Cascade Sulfonylation-Cyclization of N-Cinnamyl Aldehyde Hydrazones
The Journal of Organic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 15, 2025
Direct
installation
of
a
sulfonyl
functional
group
into
the
C5-position
tetrahydropyridazine
was
achieved
using
N'-benzylidene-N-cinnamylacetohydrazide
as
new
building
skeleton
via
photocatalytic
carbosulfonylation/annulation
procedure.
Various
substituted
C5-sulfonylated
tetrahydropyridazines
were
obtained
in
good
to
excellent
yields
employing
aryl-
or
alkylsulfonyl
chlorides
radical
sources.
This
reaction
realized
through
selective
addition
C2
position
cinnamyl
followed
by
6-endo-trig
annulation
hydrazone
CH═N
bond.
Язык: Английский
Visible Light-Induced Radical-Cascade Difluoroalkylation/Cyclization of Unsaturated Aldehyde Hydrazones for the Synthesis of Difluoroalkylated Dihydropyrazoles and Tetrahydropyridazines
The Journal of Organic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 5, 2025
Visible
light-induced
radical
5/6-endo-trig
difluoroalkylation/cyclization
of
N-allyl
and
homoallyl
aldehyde
hydrazones
with
various
fluoroalkyl
bromides
has
been
achieved.
The
reaction
was
carried
out
alkyl
difluoroacetates
difluoroacetamide
as
difluoroalkylation
reagents
Eosin
Y
an
organic
photocatalyst.
Various
difluoroalkylated
dihydropyrazoles
tetrahydropyridazines
were
obtained
under
metal-free
mild
conditions.
Язык: Английский