Synthesis method of 1,4-butanediamine

A synthetic method and the technology of butanediamine, which are applied in the field 1, can solve the problems of unsafe industrial production, failure to meet energy saving and emission reduction, and high process operation requirements, and achieve maximum implementation value and social and economic benefits, facilitate industrial production, and process conditions easy effect
CN101735067AActive Publication Date: 2010-06-16ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Publication Date
2010-06-16

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Abstract

The invention provides a synthesis method of 1,4-butanediamine, which comprises the steps of: (a) dissolving the 1,4-dibromobutyl amine represented by formula (1) in a solvent A, adding the phthalimide potassium represented by formula (2), reacting while stirring at a reflux temperature, filtering reaction liquid, washing by using distilled water to obtain the 1,4-diphthalimide butane representedby formula (3); (b) adding the 1,4-diphthalimide butane obtained in the step (1) and 40% methylamine water solution to a solvent B, heating until solids are dissolved completely, stirring and reacting for 0.5-4 hours at the reflux temperature to obtain reaction products; and (c) filtering the reaction products, post-treating filtrate, distilling the filtrate under normal pressure, and collecting the fractions between 158 DEG C and 160 DEG C to obtain the 1,4-butanediamine. The invention has simple and convenient technological conditions, cheap raw materials, mild reaction conditions, easy control and convenient industrial production.
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Description

(1) Technical field

[0001] The invention relates to a method for synthesizing 1,4-butanediamine. (2) Background technology

[0002] 1,4-Butanediamine, also known as 1,4-diaminobutane, tetramethylenediamine, carnitine, English name 1,4-Diaminobutane.

[0003]

[0004] 1,4-butanediamine is a kind of important chemical intermediate, for example, has the development prospect drug detoxification drug agmatine sulfate, is exactly synthesized with 1,4-butanediamine as main raw material (Chinese open patent CN1834085A and CN101121677). As another example, some major engineering plastics (polyamide-4,6, in the form of homopolymer or copolymer) are also synthesized using 1,4-butanediamine as an important raw material. Therefore, 1,4-butanediamine has broad market prospects.

[0005] Regarding the synthesis of 1,4-butanediamine, many countries have carried out research and development on its synthetic method, and the chemical synthesis methods integrated mainly contain the follow...

Claims

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