Title:
SULFONATION METHOD FOR UNSATURATED ALKANE OF ELECTRON-WITHDRAWING GROUP
Document Type and Number:
WIPO Patent Application WO/2023/109204
Kind Code:
A1
Abstract:
As an important intermediate and product in production, sulfonate is widely applied in various fields, such as anionic surfactants, reaction intermediates, etc. However, during a sulfonation process, sulfur trioxide is usually used as a sulfonating agent. The mixing effect with raw materials during the sulfonation reaction process is poor, heat release is severe, and purity is low. Proposed is a method of using sulfur dioxide as a sulfonating agent to carry out a sulfonation reaction with an unsaturated alkane of an electron-withdrawing group in the presence of an acid-binding agent. The reaction conditions are mild, the process is simple, the reaction time is short, and the yield is high.
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Inventors:
YUE TAO (CN)
XIAO ZHENGGUANG (CN)
WU YAOHUAN (CN)
XING LING (CN)
YANG XU (CN)
JIA WEIBIN (CN)
WANG HAO (CN)
XIAO ZHENGGUANG (CN)
WU YAOHUAN (CN)
XING LING (CN)
YANG XU (CN)
JIA WEIBIN (CN)
WANG HAO (CN)
Application Number:
PCT/CN2022/117529
Publication Date:
June 22, 2023
Filing Date:
September 07, 2022
Export Citation:
Assignee:
UNIV QINGDAO SCIENCE & TECHNOLOGY (CN)
International Classes:
C07C303/20; C07C303/32; C07C303/44; C07C309/17
Domestic Patent References:
| WO2018158334A1 | 2018-09-07 |
Foreign References:
| CN114315655A | 2022-04-12 | |||
| CN114671784A | 2022-06-28 | |||
| CN106316892A | 2017-01-11 | |||
| CN110526838A | 2019-12-03 | |||
| CN109336789A | 2019-02-15 |
Attorney, Agent or Firm:
JINAN XINYOU INTELLECTUAL PROPERTY AGENCY (CN)
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