Publication: Palladium-assisted formation of carbon-carbon bonds Part 2.” Stoichiometric synthesis of spirocyclic compounds. X-ray structure of a wallylic palladium intermediate
Authors
Vicente, J. ; Abad, J. A. ; Gil-Rubio, J. ; Jones, P. G.
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info:eu-repo/semantics/article
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Abstract
Stoichiometric reactions of arylpalladium compounds with
alkynes give spirocyclic organic and organometallic compounds.
The compound bis{r?-C-O-(2,3,4-trimethoxy-6-acetylphenyl)}
di(p-chloro)dipalladium(II) reacts with diphenylacetylene
or ethyl 3-phenylpropiolate giving 6-ace@-1,2,3,4-
tetraphenyl-9,10-dimethoxy-spiro[4.5]1,3,6,9-decatetraen-8-
one and 6-acetyl-1,3-dicarboxyethyl-2,4-diphenyl-9,lO-dimethoxy-
spiro[4,5]1,3,6,9-decatetraen-8-one, respectively. A rrallylpalladium
complex, 7~~-{6-acetyl-1,2,3,4_tetraphenyl-
8,9,lO-trimetho~-spiro[4,5]1,3,9-decatrien-6-enyl}(2,2’-bipyridine)
palladium(II) trifluoromethylsulfonate solvated, with
one molecule of 1,2-dichloroethane, has also been isolated
and its structure determined by X-ray diffraction studies.
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