Title:
METHOD FOR PREPARING 4,4'-DIALKYLBIPHENYL FROM 2-ALKYL FURAN
Document Type and Number:
WIPO Patent Application WO/2020/215812
Kind Code:
A1
Abstract:
Provided in the present invention is a method for preparing 4,4'-dialkylbiphenyl from 2-alkyl furan. The method comprises a two-step reaction: (1) a 5,5'-dialkyl-2,2'-bifuran compound is prepared from 2-alkyl furan, a catalyst used for the reaction is a polyacid palladium or a hetero-polyacid palladium, the catalyst has the advantages of being simple to synthesize and reusable, the reaction conditions are mild, and the product yield is high; and, (2) 4,4'-dialkylbiphenyl is prepared from 5,5'-dialkyl-2,2'-bifuran, a solid hetero-polyacid is employed as a catalyst, the yield of the product 4,4'-dialkylbiphenyl is high, separation from the catalyst is easy, and the polyacid catalyst used provides the advantages of being inexpensive, noncorrosive, recyclable and reusable.
Inventors:
ZHANG ZONGCHAO (CN)
KISHORE RAMINENI (CN)
GUAN XI'AN (CN)
KISHORE RAMINENI (CN)
GUAN XI'AN (CN)
Application Number:
PCT/CN2020/000074
Publication Date:
October 29, 2020
Filing Date:
April 15, 2020
Export Citation:
Assignee:
DALIAN INST CHEM & PHYSICS CAS (CN)
International Classes:
C07C15/14; C07C1/20; C07D307/36
Domestic Patent References:
| WO2017111598A1 | 2017-06-29 | |||
| WO2019199461A1 | 2019-10-17 |
Foreign References:
| CN103880790A | 2014-06-25 | |||
| CN103030627A | 2013-04-10 | |||
| EP1342711A2 | 2003-09-10 |
Other References:
LI NA-NA ET AL.: "Palladium-Catalyzed C−H Homocoupling of Furans and Thiophenes Using Oxygen as the Oxidant", ORGANIC LETTERS, vol. 16, no. 10, 7 May 2014 (2014-05-07), XP002791263, ISSN: 1523-7052, DOI: 10.1021/ol501019y
YOKOTA TAKAHIRO ET AL.: "Aerobic Oxidation of Benzene to Biphenyl Using a Pd(II)/Molybdovanadophosphoric Acid Catalytic System", ADVANCED SYNTHESIS & CATALYSIS, vol. 344, no. 8, 25 September 2002 (2002-09-25), XP055746390, ISSN: 1615-4150
ZHAO PINGPING ET AL.: "A polyoxometalate-based PdII-coordinated ionic solid catalyst for heterogeneous aerobic oxidation of benzene to biphenyl", CHEMICAL COMMUNICATIONS, vol. 48, no. 46, 12 April 2012 (2012-04-12), XP055746387, ISSN: 1359-7345
YOKOTA TAKAHIRO ET AL.: "Aerobic Oxidation of Benzene to Biphenyl Using a Pd(II)/Molybdovanadophosphoric Acid Catalytic System", ADVANCED SYNTHESIS & CATALYSIS, vol. 344, no. 8, 25 September 2002 (2002-09-25), XP055746390, ISSN: 1615-4150
ZHAO PINGPING ET AL.: "A polyoxometalate-based PdII-coordinated ionic solid catalyst for heterogeneous aerobic oxidation of benzene to biphenyl", CHEMICAL COMMUNICATIONS, vol. 48, no. 46, 12 April 2012 (2012-04-12), XP055746387, ISSN: 1359-7345
Attorney, Agent or Firm:
SHENYANG CHENCHUANG TECHNICAL PATENT AGENT LTD (CN)
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