Amine elimination process for making single-site catalysts

B - Operations – Transporting – 01 – J

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B01J 37/00 (2006.01) B01J 31/18 (2006.01) B01J 31/22 (2006.01) C07D 209/70 (2006.01) C07D 209/94 (2006.01) C07F 17/00 (2006.01) C08F 4/645 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2457727

An amine-elimination process for making single-site catalysts is disclosed. First, an indenoindole or its synthetic equivalent reacts with a tetrakis(dialkylamino) Group 4 metal compound to give a tris(dialkylamino) compound. This versatile intermediate can be halogenated, alkylated, or reacted directly with cyclopentadienyl precursors to provide valuable indenoindolyl-Group 4 metal complexes. The process selectively provides mono- indenoindolyl complexes. In addition, it enables the economical preparation of desirable Cp- or Cp-like derivatives and allows the use of an inexpensive Group 4 transition metal source

La présente invention concerne un procédé d'élimination d'amines permettant la fabrication de catalyseurs à site unique. D'abord, on fait réagir un indénoindole ou son équivalent synthétique avec un composé de métal de Groupe 4 de tétrakis(dialkylamino) pour obtenir un composé de tris(dialkylamino). Cet intermédiaire versatile peut être halogéné, alkylé, ou directement réagi avec des précurseurs de cyclopentadiényle pour fournir des complexes métalliques de Groupe 4 et d'indénoindolyle. Le procédé permet de fournir de manière sélective des complexes mono-indénoindolyle. En outre, il permet la préparation économique de dérivés Cp- ou de type Cp- et permet l'utilisation d'une source de métal de transition de Groupe 4 peu coûteuse.

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