Title:
MANUFACTURING METHOD OF DIALKYL DITHIENOBENZODIFURAN
Document Type and Number:
Japanese Patent JP2017031098
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of dialkyl dithienobenzodifuran.SOLUTION: There is provided a manufacturing method of dialkyl dithienobenzodifuran represented by the following general formula (1) by continuous processes of at least (A) to (E). (A) 1,4-di(3-methoxythienyl)-2,5-dihalobenzene is manufactured by a 3-ethoxythiophene-2-metal derivative and 1,2,4,5-tetrahalobenzene in the presence of a palladium catalyst. (B) demethylation. (C) intramolecular cyclization. (D) a Friedel-Crafts acylating reaction. (E) a reductive reaction.SELECTED DRAWING: None
Inventors:
WATANABE MASATO
UENO KO
UEDA SAORI
HACHIYA SEIJI
UENO KO
UEDA SAORI
HACHIYA SEIJI
Application Number:
JP2015152719A
Publication Date:
February 09, 2017
Filing Date:
July 31, 2015
Export Citation:
Assignee:
TOSOH CORP
International Classes:
C07D497/22
Domestic Patent References:
| JP2014139146A | 2014-07-31 | |||
| JP2017031097A | 2017-02-09 | |||
| JP2014139982A | 2014-07-31 |
Foreign References:
| WO2012145581A1 | 2012-10-26 |
Other References:
TETRAHEDRON LETT., vol. ４８, JPN6018050870, 2007, pages 7578 - 7581, ISSN: 0003948197
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