88044-02-4Relevant academic research and scientific papers
Reactions of the cyclopentadienyl ruthenium complexes (C5R 5)Ru(cod)Cl and [(C5R5)Ru(MeCN) 3]+ (R = H, Me) with phenylacetylene and acetic acid: Unexpected difference in reactivity of CpRu and Cp*Ru complexes
Perekalin, Dmitry S.,Trifonova, Evgeniya A.,Novikov, Valentin V.,Nelyubina, Yulia V.,Kudinov, Alexander R.
, p. 21 - 25 (2013)
Reaction of CpRu(cod)Cl with phenylacetylene and AcOH gives an unusual binuclear ruthenium complex CpRu(μ-σ,η3: η3,σ-C6H3Ph3)RuCp (5, 58% yield) with a bridging acyclic flyover ligand C6H3Ph 3. Under similar conditions [CpRu(MeCN)3]+ undergoes an unexpected cleavage of Cp ligand giving 4,7-diphenyl-3a,7a- dihydroindene (6, 65% yield). In sharp contrast, the pentamethylated congeners Cp*Ru(cod)Cl and [Cp*Ru(MeCN)3]+ react with phenylacetylene and AcOH in catalytic fashion giving 1,4-diphenyl-1-acetoxy-1,3- butadiene. The structures of 5 and 6 were established by X-ray diffraction. The mechanism of Cp ligand cleavage was proposed on the basis of DFT calculations.
SYNTHESIS AND PHOTOCHEMICAL REACTION OF DIELS-ALDER ADDUCT OF PHOSPHOLE OXIDE AND CYCLOPENTADIENE
Tomioka, Hideo,Miura, Shinichi,Izawa, Yasuji
, p. 3353 - 3356 (2007/10/02)
Irradiation of 1-phenylphosphole oxide-cyclopentadiene adduct gave a caged product, whereas similar irradiation of 1,2,5-triphenylphosphole oxide-cyclopentadiene adduct afforded a cleavaged product.
