Title:
C15 PHOSPHONIUM SALT ISOMER, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/060377
Kind Code:
A1
Abstract:
The present application relates to a C15 phosphonium salt isomer, a preparation method therefor, and an application thereof. The C15 phosphonium salt isomer has a structure as shown in formula I, wherein X is selected from halogen atoms or sulfite radicals. According to the present application, the C15 phosphonium salt isomer is matched with C15 phosphonium salt to form vitamin A acetate having high selectivity, low impurity content, and high crystallization yield.
Inventors:
LUO ZHAOHUI (CN)
FENG XINGLEI (CN)
ZHENG BING (CN)
CAO NA (CN)
FENG XINGLEI (CN)
ZHENG BING (CN)
CAO NA (CN)
Application Number:
PCT/CN2021/123013
Publication Date:
April 20, 2023
Filing Date:
October 11, 2021
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
International Classes:
C07F9/54; C07C403/12
Foreign References:
| CN113214126A | 2021-08-06 | |||
| CN111484525A | 2020-08-04 | |||
| CN113201016A | 2021-08-03 |
Other References:
L GUO-FENG ,GAO JIAN-RONG ,HUANG GUO-DONG ,LI XIAO-JUN ,LIU JING-PING ,JIA JIAN-HONG: "Study on a new process for preparation of vitamine A acetate", JOURNAL OF ZHEJIANG UNIVERSITY OF TECHNOLOGY, vol. 34, no. 6, 30 December 2006 (2006-12-30), pages 614 - 616, XP093056363, ISSN: 1006-4303
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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