A compound comprising a sulfonated dihydrocarbyl(arylalkyl)phosphine of formula R
1
R
2
PR
3
—(SO
3
M)
n
, wherein the R
1
and R
2
are selected individually from alkyl, aralkyl, and alicyclic groups, and R
3
is a divalent or polyvalent arylalkylene radical such that the alkyl moiety is bonded to the phosphorus atom and the aryl moiety is bonded to the alkyl and is also substituted with one or more sulfonate groups; M is a monovalent cation, and n ranges from 1 to 3. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alkyl-aryl exchange, thereby leading to reduced ligand usage and improved ligand and transition metal, e.g., rhodium, recovery and recycling.
该化合物包括一种磺化的二烷基(芳基烷基)膦化合物,其
化学式为R1R2PR3—(SO3M)n,其中R1和R2分别选自烷基、芳基烷基和脂环族基,R3是二价或多价的芳基烷基烯基基团,使得烷基部分与
磷原子相连,芳基部分与烷基相连并且还被一个或多个
磺酸基取代;M是一价阳离子,n的范围为1到3。该化合物可用作过渡
金属
配体催化剂中的
配体,这些催化剂能够催化烯烃与
一氧化碳和氢反应,形成一个或多个相应的
醛类产物。该
配体不能进行烷基-芳基交换,因此可以减少
配体的使用量,并改善
配体和过渡
金属(例如
铑)的回收和再利用。