Title:
CHEMICAL INTERMEDIATE AND PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/151157
Kind Code:
A1
Abstract:
A chemical intermediate and a preparation method, belonging to the technical field of dye intermediate synthesis. The chemical intermediate provides a new way for preparing anthraquinone dyes and dye intermediates. The preparation method of the intermediate uses 3-acetamido phthalic anhydride and benzene, two inexpensive and easily available raw materials, and the catalytic performance of three different catalysts has been researched, finding that the composite catalyst AlCl3-ZnCl2 has the highest catalytic efficiency. The preparation method has mild reaction conditions, is simple in operation, is safe, environmentally friendly, and high in yield, utilizes a simple purification method to achieve a high-purity product, and is suitable for industrial production.
Inventors:
FU JUBIAO (CN)
YUAN ZHONGYI (CN)
LIU LIANGHUI (CN)
HUANG GUORONG (CN)
LIU JING (CN)
ZHAO XIAOHONG (CN)
CAO WEI (CN)
ZENG DEYOU (CN)
FENG YU (CN)
BAO RUPING (CN)
LIANG SHIGANG (CN)
ZHOU JIANGPING (CN)
HU YU (CN)
YUAN ZHONGYI (CN)
LIU LIANGHUI (CN)
HUANG GUORONG (CN)
LIU JING (CN)
ZHAO XIAOHONG (CN)
CAO WEI (CN)
ZENG DEYOU (CN)
FENG YU (CN)
BAO RUPING (CN)
LIANG SHIGANG (CN)
ZHOU JIANGPING (CN)
HU YU (CN)
Application Number:
PCT/CN2022/082476
Publication Date:
August 17, 2023
Filing Date:
March 23, 2022
Export Citation:
Assignee:
JIUJIANG SHANSHUI TECH COMPANY LIMITED (CN)
UNIV NANCHANG (CN)
UNIV NANCHANG (CN)
International Classes:
C07C233/54; B01J27/125; B01J27/138; C07C211/61; C07C221/00; C07C225/34; C07C231/12; C07C233/33
Foreign References:
| CN1827587A | 2006-09-06 | |||
| CN111763202A | 2020-10-13 | |||
| CN106905136A | 2017-06-30 | |||
| CN111875489A | 2020-11-03 | |||
| CN106008187A | 2016-10-12 |
Other References:
SUEHIRO TADASHI: "Über die stufenweise 4-Benzylierung des 5-Hydroxy-2-methyl-3-äthoxycarbonyl-indols", CHEMISCHE BERICHTE, VCH, DE, vol. 100, no. 3, 1 January 1967 (1967-01-01), DE , pages 905 - 914, XP093083631, ISSN: 0009-2940, DOI: 10.1002/cber.19671000326
SHENG SHOU-RI, ZOU CHANG, LIU XIAO-LING, HUANG KUN: "Study on the Synthesis of 2-Ethylanthraqunione", JOURNAL OF JIANGXI NORMAL UNIVERSITY (NATURAL SCIENCES EDITION), vol. 24, no. 2, 1 May 2000 (2000-05-01), pages 152 - 154, XP093083632, DOI: 10.16357/j.cnki.issn1000-5862.2000.02.014
MATHOTRA, S. ET AL.: ""Synthesis of 1, 2, 6-trihydroxy-7, 8-dimethoxy-3-methylanthraquinone"", INDIAN JOURNAL OF CHEMISTRY, vol. 21B, no. 1, 31 January 1982 (1982-01-31), pages 27 - 29
SHENG SHOU-RI, ZOU CHANG, LIU XIAO-LING, HUANG KUN: "Study on the Synthesis of 2-Ethylanthraqunione", JOURNAL OF JIANGXI NORMAL UNIVERSITY (NATURAL SCIENCES EDITION), vol. 24, no. 2, 1 May 2000 (2000-05-01), pages 152 - 154, XP093083632, DOI: 10.16357/j.cnki.issn1000-5862.2000.02.014
MATHOTRA, S. ET AL.: ""Synthesis of 1, 2, 6-trihydroxy-7, 8-dimethoxy-3-methylanthraquinone"", INDIAN JOURNAL OF CHEMISTRY, vol. 21B, no. 1, 31 January 1982 (1982-01-31), pages 27 - 29
Attorney, Agent or Firm:
DALIAN XINGHAI PATENT LAW OFFICE COMPANY LIMITED (CN)
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