Transition metal polymerization catalyst containing CO bidentate ligand, synthesis and uses

Abstract

The invention discloses a transient metal polymerization catalyst with [CO] double teeth ligand and synthesis and appliance, which is characterized by the following: including polyolefin polymerization of N-heterocyclic carbene ligand with ortho-hydroxyl group aryl replacement, method for synthesizing and application research. This activator relates to the third tufts to the eleven tufts transient metal complex with a new type double teeth ligand.

Description

technical field The invention relates to an ortho-hydroxyaryl-substituted N-heterocyclic carbene metal compound, a synthesis method and a homogeneous phase (used directly without loading) or heterogeneous (after being supported by carriers such as silicon oxide, aluminum oxide, magnesium chloride, etc.) Application study of catalyzed cycloolefin polymerization using ). This class of compounds relates to a new class of bidentate ligands of the transition metal compounds from the third group to the eleventh group. Background technique N-heterocyclic carbene is a two-electron donor with a strong σ-electron donating ability and a weak ability to accept feedback π-electrons. These properties provide their metal compounds with properties different from other traditional neutral ligands. It has been reported that N-heterocyclic carbene complexes of some metals have higher reactivity and catalytic activity than their traditional complexes (Scholl, M.; Ding, S.; Lee, C.W.; Grubbs, ...

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Problems solved by technology

Wang Baiquan et al. have reported the synthesis of an o-hydroxyaryl N-heterocyclic carbene precursor and its palladium allyl compound (Ren, H.; Yao, P.; Xu, S.; Song, H.; Wang, B.J.Organomet.Chem.2007, 692, 2092.), but did not report their results in catalytic olefin polymerization

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