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Amine bisphenol tetradentate ligand trivalent rare-earth metal complex and application

A tetradentate ligand, rare earth metal technology, applied in the 2/12 group organic compounds without C-metal bonds, compounds containing the 3/13 group elements of the periodic table, organic chemistry and other directions, can solve the energy crisis, environmental problems problems, etc., to achieve the effect of high conversion rate, stable structure and high catalytic activity

Inactive Publication Date: 2018-03-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the advent of polyolefin plastic products, it has provided great convenience for people's production and life, but with the extensive use of these polyolefin products, it has inevitably brought about two huge problems: one is the extensive use of petrochemical raw materials The energy crisis brought about, the second is the environmental problems brought about by a large number of waste polyolefin products
Amine bisphenol tetradentate ligands are widely used in coordination chemistry due to their convenient preparation and easy structure regulation. There are still relatively few studies on ring polymerization

Method used

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  • Amine bisphenol tetradentate ligand trivalent rare-earth metal complex and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation of complex C1.

[0021] At room temperature, a THF solution of L1H2 (0.759g, 1mmol) was slowly added to 1 equivalent of [Y{(SiMe 3 ) 2} 3 ](THF)(0.64g, 1mmol) in THF solution, stirred at room temperature for 6 hours. Then, 1 equivalent of benzyl alcohol (0.1 ml, 1 mmol) was added through a syringe, and reacted at 50° C. for 12 hours to obtain complex C1 with a yield of 42%.

Embodiment 2

[0022] Example 2 Preparation of Complex C2.

[0023] At room temperature, a THF solution of L2H2 (0.821g, 1mmol) was slowly added to 1 equivalent of [Y{(SiMe 3 ) 2} 3 ](THF)(0.64g, 1mmol) in THF solution, stirred at room temperature for 6 hours. Then, 1 equivalent of benzyl alcohol (0.1 ml, 1 mmol) was added through a syringe, and reacted at 50° C. for 12 hours to obtain complex C2 with a yield of 44%.

Embodiment 3

[0024] Example 3 Preparation of Complex C3.

[0025] At room temperature, a THF solution of L3H2 (0.883g, 1mmol) was slowly added to 1 equivalent of [Y{(SiMe 3 ) 2} 3 ](THF)(0.64g, 1mmol) in THF solution, stirred at room temperature for 6 hours. Then, 1 equivalent of benzyl alcohol (0.1 ml, 1 mmol) was added through a syringe, and reacted at 50° C. for 12 hours to obtain complex C3 with a yield of 40%.

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PUM

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Abstract

The invention discloses an amine bisphenol tetradentate ligand trivalent rare-earth metal complex and application, and belongs to the technical field of ester compound polymerization catalysts. The amine bisphenol tetradentate ligand trivalent rare-earth metal complex has the structural general formula as shown in the specification; the amine bisphenol tetradentate ligand trivalent rare-earth metal complex is used as a catalyst; under a condition that no promoters are added, the amine bisphenol tetradentate ligand trivalent rare-earth metal complex can be used for catalyzing ring opening polymerization of racemate, butyrolactone, nalerolactone or caprolactone. The amine bisphenol tetradentate ligand trivalent rare-earth metal complex disclosed by the invention is stable in structure, highin catalysis activity, high in conversion rate and high in polymerization stereoselectivity.

Description

technical field [0001] The invention belongs to the technical field of ester compound polymerization catalysts, and specifically relates to a [N, X, O, O] (X=O, N) amine bisphenol tetradentate ligand trivalent rare earth metal complex and its catalytic properties in various applications in the polymerization of esters. Background technique [0002] Since the advent of polyolefin plastic products, it has provided great convenience for people's production and life, but with the extensive use of these polyolefin products, it has inevitably brought about two huge problems: one is the extensive use of petrochemical raw materials The energy crisis brought about, the second is the environmental problem brought by a large amount of waste polyolefin products. Especially with the sustainable development strategy deeply rooted in the hearts of the people, the problem of solving the coordinated development of plastic materials and environmental protection has become increasingly promin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C08G63/84C08G63/08
CPCC07F3/003C08G63/08C08G63/823
Inventor 母瀛程巍李丰
Owner JILIN UNIV
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