MANUFACTURING METHOD OF DIALKYL DITHIENOBENZODIFURAN
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...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | 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
【課題】ジアルキルジチエノベンゾジフランの製造方法の提供。【解決手段】少なくとも下記（Ａ）〜（Ｅ）の連続した工程による、下記一般式（１）で示されるジアルキルジチエノベンゾジフランの製造方法。（Ａ）パラジウム触媒存在下、３−メトキシチオフェン−２−金属誘導体と１，２，４，５−テトラハロベンゼンにより１，４−ジ（３−メトキシチエニル）−２，５−ジハロベンゼンを製造する。（Ｂ）脱メチル化。（Ｃ）分子内環化。（Ｄ）フリーデルクラフツアシル化反応。（Ｅ）還元反応。【選択図】なし |
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