-
other hydrocarbons,
alkynes are
generally hydrophobic. In acetylene, the H–C≡C bond
angles are 180°. By
virtue of this bond angle,
alkynes are rod-like. Correspondingly...
- azide-
alkyne cycloaddition (RuAAC)
gives the 1,5-triazole.
Unlike CuAAC in
which only
terminal alkynes reacted, in
RuAAC both
terminal and
internal alkynes...
- have been developed,
including cyclisation of
mixtures of
alkynes and
alkenes as well as
alkynes and nitriles.
Trimerisation of
acetylene to
benzene is highly...
-
Schrock alkylidyne complexes degrade upon
attempted metathesis of
terminal alkynes. The
critical step
occurs after formation of the
metallacycle and consists...
- with
various forms of lead or sulfur. It is used for the
hydrogenation of
alkynes to
alkenes (i.e.
without further reduction into alkanes). It is
named after...
- (alkanes), or unsaturated, with
double bonds (alkenes) or
triple bonds (
alkynes). If
other elements (heteroatoms) are
bound to the
carbon chain, the most...
- W(CO)(R2C2)3.
Because alkynes have two π bonds,
alkynes can form
stable complexes in
which they
bridge two
metal centers. The
alkyne donates a
total of four...
- and some
alkynes also
undergo polymerization by
opening of the
multiple bonds to
produce polyethylene, polybutylene, and polystyrene. The
alkyne acetylene...
- on
alkynes.
Again the mode of
action is syn and
secondary reaction products are
aldehydes from
terminal alkynes and
ketones from
internal alkynes. In...
- straight-chain
alkynes and
acetylinic alcohols. The
conversion provides a
useful approach for
remote functionalization in long-chain
alkynes. The reaction...
