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US 2019/0283008 A1Published application
Bimetallic catalytic compounds and compositions comprising permethylpentalene ligands
OwnerDermot O'HARE, Jean-Charles BUFFET +3inventors
InventorsDermot O'HARE, Jean-Charles BUFFET, Zoe TURNER, Samantha BINDING, Duncan FRASER
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Abstract
Bimetallic catalytic compounds and compositions comprising permethylpentalene ligands, as well as their methods of preparation, are described. The catalytic compounds and compositions are promising catalysts in olefin (e.g. ethylene) polymerisation reactions.
Claims25
A compound according to formula (I) shown below:
- wherein
- each TM is independently a transition metal;
- and
- each ring A is independently a 5-8 membered aryl, heteroaryl or partially unsaturated cycloalkyl that is:
- i) optionally substituted with one or more substituents selected from (1-4C)alkyl, (2-4C)alkenyl, (2-4C)alkynyl;
- (1-4C)alkoxy, aryl, aryloxy, halo, hydroxyl, nitro, —NRxRy, —C(O)NRxRy and —Si[(1-4C)alkyl]3, and/or
- ii) fused to one or more 5- or 6-membered aryl, heteroaryl, or partially unsaturated cycloalkyl rings, either or all of which being optionally substituted with one or more substituents selected from (1-4C)alkyl, (2-4C)alkenyl, (2-4C)alkynyl;
- (1-4C)alkoxy, aryl, aryloxy, halo, hydroxyl, nitro, —NRxRy, —C(O)NRxRy and —Si[(1-4C)alkyl]3,
- wherein Rx and Ry are independently selected from H and (1-4C)alkyl.
6 more elements
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A process for the preparation of a compound of formula (I) as claimed in any preceding claim, said process comprising the step of:
- 1. reacting a compound according to formula (II) shown below with a compound according to formula (III) shown below:
- wherein
- M is an alkali metal;
- ring A1 has a structure according to ring A as defined in any preceding claim;
- TM1 is as defined for TM in any preceding claim;
- and
- X is a leaving group or a group of formula (IV):
- wherein
- ring A2 has a structure according to ring A as defined herein and is the same as or different to A1;
- TM2 is as defined herein for TM hereinbefore and is the same as or different to TM1;
- and
- Y is a linking moiety.
9 more elements
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Dependencies are inferred from the claim text.