申请人:EASTMAN CHEMICAL COMPANY
公开号:EP0627439A1
公开(公告)日:1994-12-07
Disclosed are bis-phosphine compounds having the general formula
wherein:
each of A¹, A², A³ and A⁴ is an arylene radical wherein (i) each phosphorus atom P is bonded to a ring carbon atom of A¹ and A² and to a ring carbon atom of A³ and A⁴, (ii) A¹ and A², and A³ and A⁴ are bonded to each other by ring carbon atoms and (iii) each of the residues
constitutes a 5-membered ring;
each of A⁵ and A⁶ is an arylene radical wherein A⁵ and A⁶ are bonded to each other and to residues R¹-C-R² and R³-C-R⁴ by ring carbon atoms and R¹-C-R² and R³-C-R⁴ are connected to each other through a chain of 4 carbon atoms; and
R¹, R², R³ and R⁴ each represents hydrogen or a hydrocarbyl radical containing up to about 8 carbon atoms. Also disclosed are catalyst systems comprising one or more of the above phosphine compounds and rhodium, catalyst solutions comprising one or more the above phosphine compounds, rhodium and a hydroformylation solvent, and hydroformylation processes wherein olefins are contacted with carbon monoxide, hydrogen and the catalyst solution to produce aldehydes.
所公开的双膦化合物通式如下
其中
A¹、A²、A³和A⁴各自为芳基,其中(i)每个磷原子P与A¹和A²的一个环碳原子以及A³和A⁴的一个环碳原子结合,(ii)A¹和A²以及A³和A⁴通过环碳原子相互结合,以及(iii)每个残基
构成一个五元环;
A⁵ 和 A⁶ 中的每一个都是芳烯基,其中 A⁵ 和 A⁶ 通过环碳原子相互结合并与残基 R¹-C-R² 和 R³-C-R⁴ 结合,且 R¹-C-R² 和 R³-C-R⁴ 通过 4 个碳原子的链相互连接;以及
R¹、R²、R³ 和 R⁴ 各自代表氢或最多含有约 8 个碳原子的烃基。还公开了由一种或多种上述膦化合物和铑组成的催化剂体系,由一种或多种上述膦化合物、铑和加氢甲酰化溶剂组成的催化剂溶液,以及烯烃与一氧化碳、氢和催化剂溶液接触生成醛的加氢甲酰化工艺。