Health & Environmental Research Online (HERO)


Print Feedback Export to File
4936268 
Journal Article 
A NEW CYCLOPENTADIENE AND ITS USE AS A LIGAND FOR CATALYTICALLY ACTIVE RHODIUM COMPLEXES 
Costa, M; Dias, FS; Chiusoli, GP; Gazzola, GL 
1995 
Yes 
Journal of Organometallic Chemistry
ISSN: 0022-328X
EISSN: 1872-8561 
488 
1-2 
47-53 
WOS:A1995QG25400008 
Dimethyl 4-methoxycarbonylcyclopenta-1,3-diene-1,2-diacetate has been prepared from benzyl methyl malonate by reaction with 2-propynyl bromide, followed by palladium-catalyzed ring-forming oxidative carbonylation and by elimination of the benzyloxycarbonyl group and double bonds isomerization. The anion of the diacetate readily reacts with transition metal complexes, to give the corresponding cyclopentadienyl derivatives. We describe here some complexes, obtained from [{RhCl(L)(2)}(2)] [L = CO, C2H4, or 1,5-cyclooctadiene (COD)], which are efficient catalysts for the alkyne-nitrile co-cyclization to pyridines and for the hydroformylation of styrene and 1-hexene. 
RHODIUM; HYDROFORMYLATION; CYCLIZATION; CYCLOPENTADIENYL COMPLEXES; CATALYSIS 
OPPT
• Malonates
     Literature Search
          Environmental Hazard
               WOS (private)