申请人:Aventis Pharma Deutschland GmbH
公开号:US20040242560A1
公开(公告)日:2004-12-02
The invention provides the process illustrated in scheme 1 for synthesizing heterocyclic compounds of formula I.
1
In the process, an isothiocyanate of formula II is initially reacted with a primary amine of formula III to give a thiourea of formula IV. Subsequently, the thiourea of formula IV is converted to the corresponding heterocycle of formula I using a base and a sulfonyl chloride.
该发明提供了合成式I的杂环化合物的方案1所示的过程。
在该过程中,首先将式II的异硫氰酸酯与式III的初级胺发生反应,得到式IV的硫脲。随后,利用一种碱和磺酰氯将式IV的硫脲转化为相应的式I的杂环化合物。