Title:
CATALYST FOR PREPARING HIGH PURITY TAURINE AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/000429
Kind Code:
A1
Abstract:
Disclosed in the present invention is a catalyst for preparing high purity taurine. The catalyst is N,N-disubstituted aminoethanesulfonic acid, and has a structure as shown in general formula I, wherein R1 and R2 are independently one selected from alkyl, alkenyl, alkynyl, alkoxy, benzyl, mercapto, thioether, aryl, substituted aryl, heteroaryl, substituted heteroaryl, amino, amido, imido, cyano, aldehyde, carbonyl, carboxyl, sulfonic acid, substituted sulfonic acid, and ester. Also disclosed in the present invention is a preparation method for high purity taurine. Adding the catalyst of the present invention in the aminolysis step for preparing taurine has the functions of high yield, inhibition of impurities generation and reduction in the amount of ammonia. Furthermore, the catalyst itself has the advantages of being cheap and easily available, having stable physical properties, and being easily separated from the product. The preparation method of the present invention is easy to operate, has readily available raw materials and a high yield, and can be used for industrial production, and the purity of taurine prepared can be up to 98% or more.
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Inventors:
SUN HUAJUN (CN)
YANG SHANGJIN (CN)
JIANG RUYONG (CN)
GUO CHEN (CN)
QIAN ZHIQIANG (CN)
YANG SHANGJIN (CN)
JIANG RUYONG (CN)
GUO CHEN (CN)
QIAN ZHIQIANG (CN)
Application Number:
PCT/CN2019/106822
Publication Date:
January 07, 2021
Filing Date:
September 20, 2019
Export Citation:
Assignee:
HUBEI GRAND LIFE SCIENCE AND TECH CO LTD (CN)
International Classes:
C07C303/06; B01J31/02; C07C303/32
Foreign References:
| CN101148427A | 2008-03-26 | |||
| CN1220702A | 1999-06-23 | |||
| CN1635911A | 2005-07-06 | |||
| CN108299263A | 2018-07-20 | |||
| CN106588710A | 2017-04-26 |
Other References:
STNEXT, CAS REGISTRY NUMBER: 857752-50-2. 01.08.2005 NOSEK ET AL.: "Adrenolytic compounds. I. Derivatives of N-(2-chloroethyl)dibenzylamine", CHEMICKE LISTY PRO VEDU A PRUMYSL, vol. 46, DOI: 20200317145747X
Attorney, Agent or Firm:
RUNWEN PATENT LAW FIRM (CN)
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