申请人:Sumitomo Chemical Company, Limited
公开号:EP1889826A1
公开(公告)日:2008-02-20
The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating R1 and R2 from the compound (III), and then cyclizing the R1- and R2-eliminated compound to obtain the compound represented by the formula (IV); a process for producing a high purity compound (IV); an intermediate thereof; and a process for producing an intermediate.
本发明提供了;一种生产化合物(IV)的工艺,包括以下步骤:在任选取代的环状仲胺存在下,使化合物(I)与化合物(II)反应,得到化合物(III);从化合物(III)中依次或同时消除R1和R2,然后使R1-和R2-消除的化合物环化,得到由式(IV)表示的化合物;一种生产高纯度化合物(IV)的工艺;其中间体;以及一种生产中间体的工艺。