申请人:Burgos Alain
公开号:US20090131688A1
公开(公告)日:2009-05-21
The invention concerns a novel method for synthesis of 4-benzofuran-carboxylic acid or alkyl ester thereof.
This method is characterized in that a reaction for aromatization of a compound of formula (II) is performed for the synthesis of the compound of formula (I), according to the scheme A2 below:
wherein R independently represents hydrogen or a linear or branched C
1
-
15
alkyl group.
With the invention, it is possible to industrially synthesize 4-benzofuran-carboxylic acid or alkyl ester thereof with good yield and very good purity.
该发明涉及一种合成4-苯并呋喃羧酸或其烷基酯的新方法。该方法的特点在于,根据下面的方案A2,对式(II)化合物进行芳香化反应以合成式(I)的化合物:其中R独立表示氢或直链或支链的C1-15烷基基团。通过这项发明,可以以良好的产率和非常高的纯度工业化合成4-苯并呋喃羧酸或其烷基酯。