Self-replacement reaction method for cis-methyl oleate by using ruthenium Schiff base indenyl ylide catalyst

Abstract

The invention discloses a self-replacement reaction method for cis-methyl oleate by using a ruthenium Schiff base indenyl ylide catalyst. The self-replacement reaction method comprises the following steps: adding a catalyst C50H52ClN3ORu and cis-methyl oleate to a two-opening flask, stirring, and setting the reaction temperature to be 80 DEG C; performing repeated and alternate operations of vacuum pumping and nitrogen charging on a reaction container, finally adding methylbenzene under the condition of nitrogen protection, and then charging nitrogen for performing a closed reaction; preparing a gas chromatograph sample; selecting 1h, 2h, 3h, 4h, 5h and 6h as time points of gas chromatograph tests, and measuring the catalysis yield of methyl oleate self-catalytic reaction. The method has the characteristics of short preparation period, simple operation, high efficiency and energy saving, the methyl oleate self-replacement reaction can be completed within 24h, the yield is 48.3%, and the method has significant practical value.

Description

technical field [0001] The invention belongs to the field of metal-organic material preparation technology, and in particular relates to a method for using a ruthenium Schiff base indenyl ylide catalyst in the self-metathesis reaction of cis-methyl oleate. Background technique [0002] Olefin metathesis can be simply described as the exchange of molecules between alkylene or metal carbene complexes catalyzed by metal carbene complexes. Since the discovery of the reaction by Banks and Bailey in 1964, with the continuous improvement of the performance of the catalyst, it has become an important technical route for the production of olefins, polymers and fine chemical products in the petrochemical field. Especially due to the development of the petroleum industry and the increasing demand for propylene and high-carbon linear olefins in the global industrial market, the development and application of olefin metathesis reaction catalyst technology has made great progress. [000...

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Problems solved by technology

So far, there is no report on the self-metathesis reaction of methyl oleate as a ruthenium Schiff base indenyl ylide catalyst

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