16627-39-7Relevant academic research and scientific papers
Rhodium complex encapsulated functionalized hexagonal mesoporous silica for heterogeneous hydroaminomethylation
Sudheesh,Shukla, Ram S.
, p. 159 - 166 (2013/03/28)
HRh(CO)(PPh3)3 complex was encapsulated into the pores of amino functionalized hexagonal mesoporous silica. The catalyst was characterized by physico-chemical techniques like P-XRD, 31P-CPMAS NMR, FT-IR, SEM, ICP and N2 adsorption analysis. The catalyst was active for hydroaminomethylation and a variety of alkenes and amines were used as reactants for hydroaminomethylation. The catalyst afforded to achieve 100% conversion with high (>95%) selectivity to corresponding amines. Parametric variations were performed by taking 1-hexene and morpholine as representative reactants for the study of catalyst amount, temperature, pressure and 1-hexene:morpholine ratio. Significant amounts of aldehydes and enamines were observed during the course of the reaction indicating that there could be two possible rate determining steps. The catalyst was effectively recycled up to five times without much loss in its activity and selectivity.
Hydroaminomethylation of olefins using a rhodium carbene catalyst
Seayad, Abdul Majeed,Selvakumar, Kumaravel,Ahmed, Moballigh,Beller, Matthias
, p. 1679 - 1683 (2007/10/03)
Hydroaminomethylation of terminal as well as internal aliphatic and aromatic olefins with various amines is described in the presence of [Rh(cod)(Imes)Cl] as a catalyst. In general good to excellent yields and high chemoselectivity were obtained in THF at 85-105°C using 0.1 mol% of catalyst.
Amines made easily: A highly selective hydroaminomethylation of olefins
Ahmed, Moballigh,Seayad, Abdul Majeed,Jackstell, Ralf,Beller, Matthias
, p. 10311 - 10318 (2007/10/03)
A highly chemo- and regioselective hydroaminomethylation of simple as well as functionalized α-olefins using a cationic rhodium precatalyst together with Xantphos as ligand is reported. Studies of the influence of ligands and reaction conditions led to an unprecedented selective hydroaminomethylation procedure. The novel procedure constitutes an economically attractive and environmentally favorable synthesis of secondary and tertiary aliphatic amines.
