Towards Benign Synthesis of Indenes from Indanones: Zinc-Mediated Allylation of Ketones in Aqueous Media as a Source of Substituted Indenyl Ligand Precursors
Substituted indenes are valuable ligand precursors for transition-metal complexes. Previously, most of the methods employed for the preparation of alkyl-substituted indenes have involved the use of air-sensitive organometallic lithium or Grignardreagents, often in combination with expensive metal catalysts. The present work evaluates an approach to the synthesis of 2- and 3-allyl-substituted indenes
Heteroatom substituted metallocene compounds for olefin polymerization catalyst systems and methods for preparing them
申请人:Borealis A/S
公开号:US06277778B1
公开(公告)日:2001-08-21
According to the invention a new catalyst precursor is obtained, in which alkoxy or siloxy substitution in the 2-position of 5-membered ring of indenyl compound has been carried out. Thereby a metallocene compound is achieved, in which an oxygen atom is directly bonded to the 2-position of a pentahapto indenyl moiety. The catalyst precursors can be used as components for olefin polymerization catalysts.
Verfahren zur Herstellung eines Olefinpolymers unter Verwendung von Metallocenen mit speziell substituierten Indenylliganden
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0537686A1
公开(公告)日:1993-04-21
Ein sehr wirksames Katalysatorsystem zur Olefinpolymerisation besteht aus einem Cokatalysator, vorzugsweise ein Aluminoxan, und einem Metallocen der Formel I oder Ia,
worin bevorzugt M¹ Zr oder Hf, R¹ und R² Alkyl oder Halogen, R³ und R⁴ Wasserstoff oder Alkyl, R⁵ und R⁶ Alkyl, -(CR⁸R⁹)m-R⁷-(CR⁸R⁹)n- eine ein oder mehrgliedrige Kette, bei der R⁷ auch ein (subst.) Heteroatom sein kann, und m+n null oder 1 bedeuten.
HETEROATOM SUBSTITUTED METALLOCENE COMPOUNDS FOR OLEFIN POLYMERIZATION CATALYST SYSTEMS AND METHODS FOR PREPARING THEM
申请人:Borealis Technology Oy
公开号:EP0880534B1
公开(公告)日:2003-12-17
Cytotoxicities of Polysubstituted Chlorodicarbonyl(cyclopentadienyl) and (Indenyl)ruthenium Complexes
作者:Denys Mavrynsky、Jani Rahkila、Daniel Bandarra、Soraia Martins、Margarida Meireles、Maria José Calhorda、Ida J. Kovács、István Zupkó、Mikko M. Hänninen、Reko Leino
DOI:10.1021/om400234p
日期:2013.5.24
Polysubstituted cyclopentadienyl and indenyl complexes of ruthenium were synthesized and investigated to elucidate their potential cytotoxic activities. In particular, substituted (Indenyl)ruthenium complexes inhibited the proliferation of a panel of human adherent cancer cells with comparable activity to reference agent cisplatin. One of the active compounds exerted a concentration dependent inhibition of cell cycle at G1-S transiton as evidenced by flow cytometry.