METHOD FOR PRODUCING CARBOXYLIC ACID ANHYDRIDE AND METHOD FOR PRODUCING CARBOXYLIC ACID ESTER
申请人:MITSUBISHI RAYON CO., LTD.
公开号:US20170088502A1
公开(公告)日:2017-03-30
Provided is a production method whereby corresponding carboxylic acid anhydrides and carboxylic acid esters can be obtained at high yield from various carboxylic acids even without a solvent and near room temperature. A method for producing a carboxylic acid anhydride represented by formula (II), the method comprising reacting a compound represented by formula (I) and a carboxylic acid in the presence of a Group II metal compound having an ionic ligand containing an oxygen atom. A method for producing a carboxylic acid ester, the method comprising reacting a carboxylic acid anhydride produced by the aforementioned method and an alcohol. In formula (I), R
1
represents a C
1-20
hydrocarbon group. In formula (II), R
2
represents a C
1-20
hydrocarbon group.
提供了一种生产方法,可以从各种羧酸中高产率地获得相应的羧酸酐和羧酸酯,甚至无需溶剂且接近室温。一种生产由式(II)表示的羧酸酐的方法,该方法包括在含有含氧原子的离子配体的二价金属化合物存在下,使式(I)表示的化合物与羧酸发生反应。一种生产羧酸酯的方法,该方法包括将上述方法产生的羧酸酐与醇发生反应。在式(I)中,R1代表一个C1-20烃基。在式(II)中,R2代表一个C1-20烃基。