Au-Catalyzed Reaction of Propargylic Sulfides and Dithioacetals
摘要:
Propargylic sulfides and dithioacetals are found to undergo similar transformations as propargylic carboxylates when catalyzed by AuCl or AuCl3, affording indene derivatives through pentannulation of aromatic rings. The reaction presumably involves Au carbene as the reactive intermediate.
Clay Catalysis: A Simple and Efficient Synthesis of Enolthioethers from Cyclic Ketones
作者:Bouchta Labiad、Didier Villemin
DOI:10.1055/s-1989-27180
日期:——
Montmorillonite KSF in refluxing toluene catalyses the synthesis of 1-alkyl- and 1-arylthioalkenes from ketones and thiols (thiophenol or 1-butanethiol).
Indenyl compounds and catalyst components for the polymerization of
申请人:DSM N.V.
公开号:US05646322A1
公开(公告)日:1997-07-08
The invention relates to an indenyl compound of the general formula R'Ind--M--(Cp)Q.sub.k in which the symbols have the following meanings: Ind: an indenyl group R': a substituent, other than hydrogen, to the Ind group, Cp: a cyclopentadienyl group M: a transition metal from group 3, 4, 5 or 6 of the Periodic System of Elements Q: a ligand to M and k is an integer linked to the valence of M. The invention is characterized in that the R' group is bound to the Ind group at the 2-position. The indenyl compound is a catalyst component for the polymerization of olefins. The invention also relates to polymers obtainable with such indenyl compounds.