Title:
PREPARATION METHOD FOR ISOPHTHALAMIDE
Document Type and Number:
WIPO Patent Application WO/2022/088302
Kind Code:
A1
Abstract:
The present invention relates to the technical field of organic synthesis of tire rubber, in particular, to a preparation method for isophthalamide. The isophthalamide is prepared by using m-phthalodinitrile as a reaction raw material, and performing catalytic hydrolysis by means of a catalyst in the presence of anhydrous sodium carbonate and hydrogen peroxide. The present invention does not involve hazardous nitrification and hydrogenation processes, and solves the problems of a large amount of phosphorus-containing wastewater and high reaction energy consumption of a conventional dehydration process of isophthalic acid; the novel process has the advantages of environmental protection, safety and reliability, and energy saving.
Inventors:
ZHANG XIAOQIAN (CN)
WEI FENG (CN)
LU LINLIN (CN)
CHEN QI (CN)
FENG WEICHUN (CN)
XING WENGUO (CN)
SHU YONG (CN)
WEI FENG (CN)
LU LINLIN (CN)
CHEN QI (CN)
FENG WEICHUN (CN)
XING WENGUO (CN)
SHU YONG (CN)
Application Number:
PCT/CN2020/129932
Publication Date:
May 05, 2022
Filing Date:
November 19, 2020
Export Citation:
Assignee:
SHANDONG XINGQIANG CHEMICAL INDUSTRY TECH RESEARCH INSTITUTE CO LTD (CN)
UNIV QINGDAO SCIENCE & TECHNOLOGY (CN)
UNIV QINGDAO SCIENCE & TECHNOLOGY (CN)
International Classes:
C07C233/65; C07C231/06
Foreign References:
| CN112279773A | 2021-01-29 | |||
| CN112300009A | 2021-02-02 | |||
| CN102285850A | 2011-12-21 | |||
| CN108430994A | 2018-08-21 | |||
| EP0147756A2 | 1985-07-10 | |||
| JPH09208544A | 1997-08-12 |
Other References:
LIU YONG-MEI, LIN HE, MIAO-MIAO WANG, YONG CAO, HE-YONG HE, KANG-NIAN FAN: "A General and Efficient Heterogeneous Gold-Catalyzed Hydration of Nitriles in Neat Water under Mild Atmospheric Conditions", CHEMSUSCHEM, vol. 5, no. 8, 5 June 2012 (2012-06-05), pages 1392 - 1396, XP055927077, DOI: 10.1002/cssc.201200203
KATRITZKY A. R., BOGUSLAW PILARSKI, LASZLO UROGDI.: "EFFICIENT CONVERSION OF NITRILES TO AMIDES WITH BASIC HYDROGEN PEROXIDE IN DIMETHYL SULFOXIDE.", SYNTHESIS, GEORG THIEME VERLAG, STUTTGART, DE., no. 12., 1 December 1989 (1989-12-01), STUTTGART, DE. , pages 949/950., XP000103253, ISSN: 0039-7881, DOI: 10.1055/s-1989-27441
KHADILKAR BHUSHAN M., MADYAR VIRENDRA R.: "TOTALLY SELECTIVE DRY MICROWAVE ASSISTED AMIDE SYNTHESIS BY HYDRATION OF NITRILE USING SILICA SUPPORTED MnO 2 REAGENT", SYNTHETIC COMMUNICATIONS, TAYLOR & FRANCIS INC., US, vol. 32, no. 11, 1 January 2002 (2002-01-01), US , pages 1731 - 1734, XP055927069, ISSN: 0039-7911, DOI: 10.1081/SCC-120004268
KATRITZKY A. R., BOGUSLAW PILARSKI, LASZLO UROGDI.: "EFFICIENT CONVERSION OF NITRILES TO AMIDES WITH BASIC HYDROGEN PEROXIDE IN DIMETHYL SULFOXIDE.", SYNTHESIS, GEORG THIEME VERLAG, STUTTGART, DE., no. 12., 1 December 1989 (1989-12-01), STUTTGART, DE. , pages 949/950., XP000103253, ISSN: 0039-7881, DOI: 10.1055/s-1989-27441
KHADILKAR BHUSHAN M., MADYAR VIRENDRA R.: "TOTALLY SELECTIVE DRY MICROWAVE ASSISTED AMIDE SYNTHESIS BY HYDRATION OF NITRILE USING SILICA SUPPORTED MnO 2 REAGENT", SYNTHETIC COMMUNICATIONS, TAYLOR & FRANCIS INC., US, vol. 32, no. 11, 1 January 2002 (2002-01-01), US , pages 1731 - 1734, XP055927069, ISSN: 0039-7911, DOI: 10.1081/SCC-120004268
Attorney, Agent or Firm:
JINAN CLAIM PATENT AGENCY OFFICE (GENERAL PARTNERSHIP) (CN)
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