0000000000246632

AUTHOR

Thomas Rüping

showing 2 related works from this author

Die oligomerisierung endständiger hydroxyacetylene mit rhodiumkomplexkatalysatoren

1982

The substrate and ligand influence on oligomerisation of terminal hydroxyacetylenes catalysed by rhodium complexes has been studied. In this reaction α- and β-hydroxyacetylenes were compared with each other and with an unsubstituted terminal alkyne. The concentration dependant ligand control with Ph3As and Ph3P has been compared and different ligand association behaviour is found, because only with Ph3As as ligand at intermediate concentrations cyclic trimers are selectively formed. Some brief experiments with different p- and o-substituted triphenylarsines show electronic and marked steric influences on the oligomerisation of 3-methylbutyne-1-ol-3.

Steric effectschemistry.chemical_classificationChemistryStereochemistryLigandOrganic ChemistrySubstrate (chemistry)Alkynechemistry.chemical_elementBiochemistryRhodiumInorganic ChemistryMaterials ChemistryPhysical and Theoretical ChemistryJournal of Organometallic Chemistry
researchProduct

The dimerization of substituted 3-TMSO-1-alkynes with (φ3P)3RhCl

1987

Abstract 3-Trimethylsilyloxy-1-alkynes were prepared from 3-hyroxy-1-alkynes and dimerized with (φ3P)3RhCl as a catalyst. The influence of a steric effect on the rates of dimerization is demonstrated.

Inorganic ChemistrySteric effectschemistry.chemical_compoundChemistryPolymer chemistryMaterials ChemistryOrganic chemistryNuclear magnetic resonance spectroscopyPhysical and Theoretical ChemistryTriphenylphosphineAliphatic compoundCatalysisInorganica Chimica Acta
researchProduct