[EN] PROCESS FOR THE CARBONYLATION OF A CONJUGATED DIENE<br/>[FR] PROCEDE PERMETTANT LA CARBONYLATION D'UN DIENE CONJUGUE
申请人:SHELL INT RESEARCH
公开号:WO2004103948A1
公开(公告)日:2004-12-02
A process for the carbonylation of a conjugated diene, comprising reacting the conjugated diene with carbon monoxide and a co-reactant having a mobile hydrogen atom in the presence of a catalyst system including: (a) a source of palladium; and (b) a bidentate diphosphine ligand of formula (II): R1R2 > p1R3m-R-R4n-p2 < R5R6 wherein p1 and p2 represent phosphorus atoms; R1, R2, R5, and R6 independently represent the same or different optionally substituted organic radical containing a tertiary carbon atom through which each radical is linked to the phosphorus atom; R3 and R4 independently represent the same or different optionally substituted methylene groups; R represents an organic group comprising the bivalent bridging group C1-C2 through which R is connected to R3 and R4; m and n independently represent a natural number in the range of from 0 to 4, wherein the rotation about the bond between the carbon atoms C1 and C2 of the bridging group is restricted a temperature in the range of from 0 °C to 250 °C, and wherein the dihedral angle between the plane occupied by the three atom sequence composed of C1, C2 and the atom directly bonded to C1 in the direction of p1, and the plane occupied by the three atom sequence C1, C2 and the atom directly bonded to C2 in the direction of p2, is in the range of from 0 to 120°; and (c) a source of an anion.
一种用于共轭二烯的羰基化过程,包括在催化剂系统的存在下将共轭二烯与一氧化碳和具有可移动氢原子的共反应剂反应,所述催化剂系统包括:(a) 钯源;和(b) 公式(II)的双膦双齿配体:R1R2 > p1R3m-R-R4n-p2 < R5R6,其中p1和p2代表磷原子;R1、R2、R5和R6独立地代表相同或不同的可选择取代的含有第三级碳原子的有机基团,每个基团通过其与磷原子的连接而与磷原子连接;R3和R4独立地代表相同或不同的可选择取代的亚甲基基团;R代表包含双价桥接基团C1-C2的有机基团,通过该基团R连接到R3和R4;m和n独立地代表在0到4范围内的自然数,其中在桥接基团的碳原子C1和C2之间的键的旋转受到限制;在0°C至250°C范围内的温度下进行;且在由C1、C2和直接与C1朝向p1方向上键合的原子组成的三原子序列所占据的平面和由C1、C2和直接与C2朝向p2方向上键合的原子组成的三原子序列所占据的平面之间的二面角在0到120°的范围内;和(c) 阴离子源。