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| 均相体系中含氮双齿膦配体对1-十二烯氢甲酰化反应的影响 | |
| 引用本文： | 黄雪原,田晓红. 均相体系中含氮双齿膦配体对1-十二烯氢甲酰化反应的影响[J]. 西南民族学院学报(自然科学版), 2005, 31(2): 186-188 |
| 作者姓名： | 黄雪原 田晓红 |
| 作者单位： | [1]西南民族大学学报编辑部，成都610041 [2]四川大学化学学院有机金属络合催化研究所，成都610064 |
| 摘 要： | 含氮双齿膦配体(ph2PCH2)2NCH2CH2OCH2CH2NHCH2CH2PO3Na2(以A表示)在1-十二烯的氢甲酰化反应中的实验结果表明双膦配体的螯合作用降低了催化活性以及双膦-铑配合物有利于直链醛的生成.A与油溶性催化剂HRh(CO)(PPh3)3在合成气氛下发生配体交换形成配合物HRh(CO)(A)(PPh3),其催化活性比单膦-铑配合物的催化活性更低.由于双膦与铑配位后形成的络合物中铑的配位空间更拥挤,因此1-十二烯的端碳原子更容易与铑中心络合配位,形成直链烷基-铑络合物,使得产物醛中直链醛的含量增大. |
| 关 键 词： | 1-十二烯 氢甲酰化 铑-膦络合物 含氮双齿膦配体 |
| 文章编号： | 1003-2843(2005)02-0186-03 |
| 修稿时间： | 2004-11-08 |
Effects of diphosphine ligand with N-atom on 1-dodecene hydroformylation in homogeneous system |
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| Huang Xue-yuan,Tian Xiao-hong. Effects of diphosphine ligand with N-atom on 1-dodecene hydroformylation in homogeneous system[J]. Journal of Southwest Nationalities College(Natural Science Edition), 2005, 31(2): 186-188 | |
| Authors: | Huang Xue-yuan Tian Xiao-hong |
| Abstract: | The lower conversion of olefin in the presence of diphosphine with N-atom ((Ph2PCH2)2NCH2CH2OCH2CH2NHCH2CH22PO3Na2) than that of monophosphine can be attributed to the stabilization of rhodium complex by the chelation of diphosphine ligand. Owing to the chelation of diphosphine ligand with the metal center, the coordination environment of rhodium complex becomes sterically more congested. Accordingly, less-crowed linear alkyl-rhodium intermediate is favorably formed, thereby the yield of linear aldehyde in the product increases. |
| Keywords: | 1-dodecene hydroformylation Rhodium-phosphine complex diphosphine ligand with N atom |
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