A compound comprising a sulfonated dihydrocarbyl(arylalkyl)phosphine of formula R1R2PR3-(SO3M)n, wherein the R1 and R2 are selected individually from alkyl, aralkyl, and alicyclic groups, and R3 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.
一种化合物,包含磺化的二烃基(芳烷基)膦,其
化学式为R1R2PR3-(SO3M)n,其中R1和R2各自独立地选自烷基、芳烷基和脂环族基团,R3为二价或多价的芳烷基二价基团,使得烷基部分与
磷原子相连,芳基部分与烷基相连,并且还带有一个或多个
磺酸基团;M为单价阳离子,n的范围为1至3。该化合物作为
配体在过渡
金属-
配体复合催化剂中具有应用价值,这些催化剂能够催化烯烃不饱和化合物与
一氧化碳和
氢气反应生成一个或多个相应的
醛类产物。该
配体不具备烷基-芳基交换能力,从而减少了
配体的使用量,并提高了
配体和过渡
金属(例如
铑)的回收和再循环效率。