- H − C ≡ C − H {\displaystyle {\ce {H-C#C}}{\ce {-H}}}
Acetylene H − C ≡ C − C | H H | − H {\displaystyle {\ce {H-C#C}}{-}{\ce {\overset {\displaystyle...
- to form
alkynyl-diborane intermediates,
which quickly rearrange into
borirene products. Alternatively,
photoinduced rearrangement of
alkynyl-boranes provides...
- good
enough leaving group for the
chemical generation of aryl cations.
Alkynyl cations are
extremely unstable, much less
stable than even CH+ 3 (hydride...
-
hydroquinones in the
total synthesis of
vitamin E. The
chemical shift of an
alkynyl proton and
propargylic proton generally occur in the same
region of the...
-
methyl group,
ethyl group)
Alkenyl group (e.g.,
vinyl group,
allyl group)
Alkynyl group (propargyl group)
Benzyloxycarbonyl group (Cbz) tert-butoxycarbonyl...
- of
alkynyl ketiminoesters. (scheme 25)
Their application shows that
catalyst 26 and MeCN can be
replaced by 28 and
dichloroethane for many
alkynyl trifluoromethyl-...
-
saturated position (sp3-hybridized) on a
molecular framework next to an
alkynyl group. The name
comes from mix of
propene and argentum,
which refers to...
-
Aldehydes react with
propargyl bromide in a Barbier-type
reaction to
yield alkynyl alcohols: At low temperatures, upon
treatment with magnesium, propargyl...
-
alkynes (at an sp carbon) are
known as alkyl,
alkenyl (vinyl), aryl, and
alkynyl (acetylide) anions, respectively.
Carbanions have a
concentration of electron...
-
leads to slow reactions. The
organic residue R = alkenyl, aryl, allyl,
alkynyl or propargyl. The
halide X' in the
organozinc compound can be chloride...
