申请人:Clariant GmbH
公开号:US20020082447A1
公开(公告)日:2002-06-27
The invention relates to a process for preparing ethylenediphosphonic acids of the formula I,
1
where R
1
and R
2
may be identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, which comprises reacting phosphorous acid (H
3
PO
3
) directly with alkynes.
这项发明涉及一种制备乙烯二膦酸的过程,其化学式为I,其中R1和R2可以相同也可以不同,可以是氢、羧基、羧酸衍生物、具有1至10个碳原子的未取代或取代的烷基基团、苯基、苄基或烷基取代的芳香系统,包括将磷酸(H3PO3)直接与炔烃反应。