Ruthenium Allenylidene Complex Tethering a Cyclopropyl Group and Novel Complexes from Fluorene Derivatives
Date Issued
2011
Date
2011
Author(s)
Chen, Chien-Chih
Abstract
The cyclopropyl allenylidene complex [Ru]=C=C=C(R)(C3H5) ([Ru] = Cp(PPh3)2Ru, 2, R = thiophene) is prepared from the reaction of [Ru]Cl with cyclopropyl propargyl alcohol 1 in the presence of KPF6. Thermal treatment, halide anion addition, and Pd-catalyzed reactions of 2 all lead to a ring expansion of the cyclopropyl group giving the vinylidene complex 4 with a five-membered ring. This ring expansion proceeds via a C-C bond formation between C
Subjects
allenylidene
ruthenium
ring expansion
ring opening
isomerization
cyclization
cyclopropyl allene
carbyne
alkoxy carbene
Pd-catalyzed reactions
[2+2] reaction
C-C bond activation
C-H bond activation
dicationic cyclic vinylidene
9-endo-dig reaction
fluorene
Type
thesis
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