5-alkyl guanidine ionic liquid, and preparation and application thereof

A technology of ionic liquid and pentaalkylguanidine, which is applied in the field of liquid catalyst and application, can solve the problems of complex ionic liquid synthesis process, polluting environment, preservation, and high production cost, and achieve good organic solubility, warm reaction conditions, and recyclable use Effects in simple steps
CN106883151AInactive Publication Date: 2017-06-23EAST CHINA NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
EAST CHINA NORMAL UNIVERSITY
Publication Date
2017-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses 5-alkyl guanidine ionic liquid, and preparation and application thereof. After tetramethyl guanidine and alkyl halide are adopted to be ionized, ion exchange with metal salt is performed to prepare 5-alkyl guanidine acid radical ionic liquid, and the ionic liquid is used as a catalyst to synthesize quinazoline-2,4(1H,3H)-ketone and derivatives thereof in the carboxylation and cyclization reaction of carbon dioxide and anthranilonitrile. Compared with the prior art, the 5-alkyl guanidine ionic liquid is simple in synthetic process, low in costs and has excellent performance in a homogeneous catalysis carbon dioxide reaction process; particularly, when the 5-alkyl guanidine ionic liquid is used in the carboxylation and cyclization reaction synthesis of the carbon dioxide and the anthranilonitrile, quinazoline-2,4(1H,3H)-diketone and derivatives thereof can be obtained in a relatively mild condition; the catalytic performance is good; the reaction condition is mild; and the postprocessing is easy. Meanwhile, the 5-alkyl guanidine ionic liquid can be used as a solvent and a catalyst; the use of a large quantity of organic solvent is avoided; and the 5-alkyl guanidine ionic liquid has important significance on researching medicinal chemistry and compounds of medical intermediates.
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Description

technical field

[0001] The invention relates to the technical field of liquid catalysts and applications, in particular to a pentaalkylguanidine ionic liquid and its preparation and application in carbon dioxide reaction. Background technique

[0002] The rapid development of industry consumes a large amount of fossil energy, and the emission of carbon dioxide increases year by year. The problem of global warming is becoming more and more serious, which has brought great harm to human existence. Therefore, it is very important to reasonably control the emission of carbon dioxide and effectively capture and utilize carbon dioxide. significance. With the deepening of carbon dioxide research, it is regarded as renewable C 1 Resource synthesis of high value-added chemicals has become a green synthesis approach that can achieve both environmental protection and energy and resource conservation. At the beginning of the 21st century, a method for the reaction of carbon dioxide an...

Claims

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