103656-17-3Relevant articles and documents
One-pot synthesis of substituted benzene via intermolecular [2+2+2] cycloaddition catalyzed by air-stable Ru(ii)-complex
Wu, Chung-Yeh,Lin, Ying-Chih,Chou, Pi-Tai,Wang, Yu,Liu, Yi-Hung
, p. 3748 - 3753 (2011)
Intermolecular [2+2+2] cycloaddition reaction employing an air-stable ruthenium perchloro-cyclobutenonyl complex as a catalyst is reported. A series of internal alkynes were incorporated with dimethyl acetylene-dicarboxylate in a ratio of 1:2 to give vari
Small Rings, 77. - Generation and Trapping Reactions of Tetramethyl Cyclobutadienetetracarboxylate
Maier, Guenter,Wilmes, Rolf,Fuchs, Hansjoerg,Leinweber, Matthias
, p. 1827 - 1834 (2007/10/02)
Dibromocyclobutane derivatives 6 and 7 serve as precursors for the generation of the title compound 1.In the presence of suitable reagents 1 can be trapped in Diels-Alder additions.Photocyclization of the adducts can be used for the construction of polyfu
CYCLOTRIMERIZATION OF ACETYLENES CATALYZED BY (η5-CYCLOPENTADIENYL)RHODIUM COMPLEXES
Abdulla, Khalid,Booth, Brian L.,Stacey, Catherine
, p. 103 - 114 (2007/10/02)
The comparative rates of cyclotrimerization of dimethylacetylenedicarboxylate (DMAD) and hex-3-yne have been studied with the catalysts 5-C5R5)Rh(COD)> (R=H, Me, Cl; COD=cycloocta-1,5-diene), 5-C5R5)Rh(CO)2> (R=H, Me), 5-C5Me5)RhL2> (L=C2H4, PF3) and 5-C5H4PPh3)Rh(CO)2>+ PF6- under pseudo-first-order conditions.In these reactions, which all obey the rate law, rate=kobs, the rate of cyclotrimerization of DMAD decreases as the ?-acceptor strength of the cyclopentadienyl ligand increases, and this trend is reversed in reactions of hex-3-yne.The rates of cyclotrimerization also appear to vary with the nature of the ligand L (where L=C2H4, CO, PF3, 1/2COD) implying that L remains bound to the rhodium atom through the catalytic cycle.Preliminary studies have shown that in some cases selective co-oligomerization occurs with mixtures of two different acetylenes using the catalysts 5-C5H5)Rh(COD)> and 5-C9H7)Rh(COD)>.
