Ionic liquids (ILs) are suitable media for the Co-2(CO)(8)-catalysed intramolecular and intermolecular Pauson-Khand (PK) annelation, provided that the reaction is carried out under a CO pressure of 10 bar. Two diethyl allyl propargyl malonates were quantitatively converted into the relevant cyclopentenones, whereas heteroatom tethered enynes gave lower yields in their cyclocarbortylation products. A moderate yield in the corresponding Pauson-Khand product was obtained reacting phenylacetylene with norbornene.
Catalytic Pauson-Khand reactions in ionic liquids / Mastrorilli, P.; Nobile, C. F.; Paolillo, R.; Suranna, G. P.. - In: JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL. - ISSN 1381-1169. - STAMPA. - 214:1(2004), pp. 103-106. [10.1016/j.molcata.2003.11.033]
Catalytic Pauson-Khand reactions in ionic liquids
Mastrorilli, P.;Nobile, C. F.;Suranna, G. P.
2004-01-01
Abstract
Ionic liquids (ILs) are suitable media for the Co-2(CO)(8)-catalysed intramolecular and intermolecular Pauson-Khand (PK) annelation, provided that the reaction is carried out under a CO pressure of 10 bar. Two diethyl allyl propargyl malonates were quantitatively converted into the relevant cyclopentenones, whereas heteroatom tethered enynes gave lower yields in their cyclocarbortylation products. A moderate yield in the corresponding Pauson-Khand product was obtained reacting phenylacetylene with norbornene.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
