METHOD FOR PRODUCING DI- OR TRICARBOXYLIC ACID ESTERS BY ALKOXYCARBONYLATION OF DIENES HAVING CONJUGATED DOUBLE BONDS

PROBLEM TO BE SOLVED: To provide a novel method for preparing di- or tricarboxylic acid esters.SOLUTION: A method comprises the method steps of: a) charging a diene having two conjugated double bonds; b) adding a phosphine ligand and a catalyst precursor such as palladium dichloride; c) adding an al...

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Main Authors DIRK FRIDAG, DONG KAI-WU, RALF JACKSTELL, DIETER HESS, KATRIN MARIE DYBALLA, FRANK GEILEN, ROBERT FRANKE, MATTHIAS BELLER
Format Patent
LanguageEnglish
Japanese
Published 15.03.2018
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Summary:PROBLEM TO BE SOLVED: To provide a novel method for preparing di- or tricarboxylic acid esters.SOLUTION: A method comprises the method steps of: a) charging a diene having two conjugated double bonds; b) adding a phosphine ligand and a catalyst precursor such as palladium dichloride; c) adding an alcohol; d) feeding CO; e) heating the reaction mixture, with conversion of the diene to a dicarboxylic ester. [In the formula, R, R, Rand Rare -(C-C)-alkyl, -(C-C)-aryl, or the like; and Rand Rare -H, -(C-C)-alkyl, or the like.]SELECTED DRAWING: None 【課題】ジカルボン酸エステルまたはトリカルボン酸エステルを調製するための新規の方法の提供。【解決手段】以下の方法ステップ:a)2つの共役二重結合を有するジエンを装入するステップと、b)式(I)のホスフィン配位子と、二塩化パラジウム等の触媒前駆体とを加えるステップと、c)アルコール加えるステップと、d)COを供給するステップと、e)当該反応混合物を加熱して、前記ジエンをジカルボン酸エステルへと転化させるステップと、を含む方法。[式中、R1、R2、R3、R4は、−(C1〜C12)−アルキル、−(C6〜C20)−アリール等;R5、R6は、−H、−(C1〜C12)−アルキル等]【選択図】なし
Bibliography:Application Number: JP20170137960