The heterocyclization of unsaturated nitriles and ethyne catalyzed by
cyclopentadienyl - ١،٥ - cis, cis-cyclooctadiene-cobalt (I) and promoted by light
has been studied in toluene as solvent.
Acrylonitrile and substituted acrylonitriles gave satis
fying results
interesting for the preparation of ٢-vinylpyridines.
No reaction was observed using fumaronitrile, maleonitrile and
allycyanides.
(E)/(Z)-ratio of reactants and products seems not to be influenced within the
reaction.
A openchained Bispyridyl ether has been synthesized using ٢،٢- bis
[٢-cyanoethoxy]- diethylether as an intermediate from the reaction of
acrylonitrile with Diethylene glycol
The heterocyclization of ٢،٢- bis [٢-cyanoethoxy]- diethylether and
acet
ylene catalyzed by cyclopentadienyl-١،٥-cis,cis-cyclooctadiene-cobalt(I)
and light has been studied in toluene as solvent.
The Nitrile gave results of interest in the preparation of the openchained
bispyridyl ether compound ٢,٢-bis [٢-pyridylethoxy]-deithylether.
