Rare-earth metal arylamine group compound as well as preparation method and application thereof

By developing rare earth metal aromatic amine-based compounds as catalysts to catalyze the hydrophosphine reaction of aldehydes or ketones and phosphites, the problems of insufficient catalyst activity and yield in the existing technology have been solved, and efficient and simple α-hydroxyphosphine has been achieved. Acid ester synthesis.

CN103626806AInactive Publication Date: 2014-03-12SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU UNIV
Filing Date
2013-11-06
Publication Date
2014-03-12
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

There is a lack of arylamine-based rare earth metal organic compounds with clear structures in the prior art to catalyze the hydrophosphine reaction of aldehydes, ketones and phosphites, and the catalyst activity and yield are insufficient.

Method used

A rare earth metal aromatic amine-based compound (2,6-R12PhNH)5LnLi2(THF)2 was developed as a one-component catalyst, prepared by synthesizing the reaction of aromatic amine lithium and rare earth metal chloride, and used to catalyze the reaction between aldehydes or ketones and sulfide. Hydrophosphine reaction of phosphate esters, the reaction conditions are anhydrous, inert gas protection, the temperature is -30~75°C, and the reaction time is 3~60 minutes.

Benefits of technology

The synthesis of α-hydroxyphosphonate with high activity, low catalyst dosage and high yield has been achieved. The catalyst dosage is small and the substrate has wide applicability, providing a new and simple synthesis method.

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Abstract

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.
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Citation Information

Patent Citations

  • CN101805373A

  • CN102755906A

  • CN103254247A

Cited By

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