Title:
METHOD FOR PREPARING ACESULFAME POTASSIUM
Document Type and Number:
WIPO Patent Application WO/2023/123406
Kind Code:
A1
Abstract:
Disclosed in the present application is a method for preparing acesulfame potassium. The method comprises the following steps: step 1, mixing sulfamic acid and an amine for reaction to prepare amino sulfamate; step 2, reacting the amino sulfamate with diketene to obtain a first material; step 3, reacting the first material with a sulfur trioxide solution to obtain a second material; step 4, reacting the second material with a hydrolysate to obtain a third material; and step 5, reacting an organic phase separated from the third material with a potassium-containing compound to prepare acesulfame potassium, wherein amino acetyl acetyl-N-sulfamate in the first material in step 3 continuously reacts with sulfur trioxide in a constant molar ratio. The present application has the advantage of continuous reaction.
Inventors:
CHEN YONGXU (CN)
ZHOU RUI (CN)
WANG CONGCHUN (CN)
LIU GANG (CN)
ZHOU RUI (CN)
WANG CONGCHUN (CN)
LIU GANG (CN)
Application Number:
PCT/CN2021/143816
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
ANHUI JINHE IND CO LTD (CN)
International Classes:
C07D291/06; B01J27/053
Foreign References:
| CN113454072A | 2021-09-28 | |||
| CN113773278A | 2021-12-10 | |||
| CN113508110A | 2021-10-15 | |||
| CN104411693A | 2015-03-11 | |||
| CN113454074A | 2021-09-28 |
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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