80109-11-1Relevant academic research and scientific papers
Ruthenium-catalyzed cycloisomerization of cis-3-en-1-ynes to cyclopentadiene and related derivatives through a 1,5-sigmatropic hydrogen shift of ruthenium vinylidene intermediates
Datta, Swarup,Odedra, Arjan,Liu, Rai-Shung
, p. 11606 - 11607 (2007/10/03)
We report a new ruthenium-catalyzed cycloisomerization of unactivated cis-3-en-1-ynes, which produces substituted cyclopentadiene and related derivatives. The mechanism of this cyclization is proposed to involve a [1,5]-sigmatropic hydrogen shift of ruthenium-vinylidene intermediates on the basis of deuterium-labeling experiments. Copyright
Response of acidity and magnetic resonance properties to aryl substitution in carbon acids and derived carbanions: 1-Aryl-4-phenylcyclopenta-1,3-dienes. Dependence of ionic structure on aryl substitution
Greifenstein, Linda G.,Lambert, Joseph B.,Nienhuis, Ronald J.,Drucker, George E.,Pagani, Giorgio A.
, p. 7753 - 7761 (2007/10/06)
Monosubstitution on one aryl ring of 1,4-diphenylcyclopenta-1,3-diene provides a probe for studying anion stability, charge density, and ionic structure. We have measured the pKa's of several members of this series in both pure Me2SO
