A kind of unsymmetrical β-diimine monovalent magnesium compound and its preparation method and application in hydroboration reaction of aldehydes and ketones

A magnesium compound, asymmetric technology, applied in the preparation of amino compounds, the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, etc., can solve problems such as the hydroboration reaction of borane and carbonyl compounds that have not yet been developed, To achieve the effect of simple and controllable reaction, mild reaction conditions and easy synthesis
CN107556196BActive Publication Date: 2020-03-10NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
Publication Date
2020-03-10

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Abstract

The invention discloses an asymmetric beta-diimine monovalent magnesium compound, a preparation method and an application thereof in aldehyde-ketone-boron hydrogenation reaction. The preparation method comprises the following steps: firstly condensing acetylacetone respectively with different types of aromatic amine to generate asymmetric beta-diimine ligand, then reacting the asymmetric beta-diimine ligand with equivalent magnesium methyl iodide to generate iodide of magnesium, and finally using excessive sodium for reduction to obtain the asymmetric beta-diimine monovalent magnesium compound. The preparation method disclosed by the invention is simple, the synthesized asymmetric beta-diimine monovalent magnesium compound has an obvious effect in aldehyde-ketone-boron hydrogenation reaction, the use amount of a catalyst is only 0.1%, the reaction speed is high, the yield is very high, and the idea of green chemistry is highly conformed.
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Description

technical field

[0001] The invention relates to the technical field of catalytic reactions of magnesium metal compounds, in particular to an asymmetric β-diimine monovalent magnesium compound, its preparation method and its application in the hydroboration reaction of aldehydes and ketones. Background technique

[0002] Boron is a non-toxic, pollution-free inactive element, which has good flame-retardant, anti-wear and flame-retardant properties. Borate esters can be regarded as derivatives after the hydrogen in boric acid is replaced by organic groups, so it also has the characteristics of non-toxic, odorless, and good environmental adaptability. Therefore, borates are often used in flame retardants, surfactants, coupling agents, lubricating oil additives, automotive brake fluids, etc. The addition reaction of carbonyl compound and borane is an important method for borate synthesis. This reaction is non-toxic and harmless, has no other side reactions, and has good selectiv...

Claims

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