申请人:——
公开号:US20040138504A1
公开(公告)日:2004-07-15
A bis-phosphonium salt represented by the following formula (1) is provided:
1
wherein R
1
, R
2
, R
3
, and R
4
each represent a linear or branched alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group; A represents an alkylene group; Y represents an anion; R
1
and R
2
may form a ring; R
3
and R
4
may form a ring; and R
1
, R
2
, R
3
, and R
4
may be the same or different. A process for producing such a bis-phosphonium salt includes a step of allowing a first secondary phosphine and second secondary phosphine to react with a compound in an alcohol solvent selected from a secondary alcohol and tertiary alcohol. The compound is represented by the following formula (5):
Y—A—Y (5)
提供以下式(1)所代表的双磷銨鹽:其中R1、R2、R3和R4分别代表直链或支链烷基、环烷基、芳基或芳基烷基;A代表烷基;Y代表阴离子;R1和R2可以形成环;R3和R4可以形成环;R1、R2、R3和R4可以相同也可以不同。制备这种双磷銨鹽的方法包括让第一次二级膦和第二次二级膦在选择自二级醇和三级醇的醇溶剂中与以下式(5)所代表的化合物反应的步骤:Y—A—Y(5)。