Reactions of cycloproparenes with metal carbenes.
[figure: see text] Benzocyclopropene and cyclopropa[b]naphthalene react with dichloro-bis(tricyclohexylphosphine)methylideneruthenium, incorporating the metallacarbene to form unstable 3-ruthenacyclopentenes, which decompose to give o-xylylenes that can be trapped as Diels-Alder adducts by dimethyl acetylenedicarboxylate. In contrast, bis(eta 5-cyclopentadienyl)methylidenetitanium forms moderately stable 2- and 3-titanacyclopentene complexes.
Litosh
V A
VA
Department of Chemistry, Rice University, Houston, Texas 77005-1892, USA.
Saini
R K
RK
Guzman-Jimenez
I Y
IY
Whitmire
K H
KH
Billups
W E
WE