One-pot synthesis of amines by aminomethylation of alkenes catalysed by dinuclear rhodium complexes under mild conditions
作者:Thierry Baig、Philippe Kalck
DOI:10.1039/c39920001373
日期:——
The complex [Rh2(µ-S-But)2(CO)2(PPh3)2] with a slight excess of PPh3 catalyses the aminomethylation reaction of terminal alkenes under low pressures of carbon monoxide and hydrogen.
Carbon monoxide as a building block in organic synthesis
作者:Thierry Baig、Jacques Molinier、Philippe Kalck
DOI:10.1016/0022-328x(93)80402-w
日期:1993.8
hydrogen in the presence of the complex [Rh2(μ-StBu)2(CO)2(PPh3)2]. This reaction involves the successive hydroformylation of the alkene, the condensation of the aldehyde produced in the first step with the amine, and the hydrogenation of the imine or enamine thus obtained. This last hydrogenation step is rate-determining. At 1.8 MPa, oct-1-ene was transformed with 99% conversion, giving 80% diethylnonylamine
一锅氨基甲基化反应是在配合物[Rh 2(μ- St Bu)2(CO)2(PPh 3)2 ]存在下,在一氧化碳和氢气的低压下进行的。该反应涉及烯烃的连续加氢甲酰化,第一步中产生的醛与胺的缩合以及由此获得的亚胺或烯胺的氢化。最后的氢化步骤是速率确定的。在1.8 MPa时,辛烯-1-烯以99%的转化率转化,得到80%的二乙基壬基胺,2%的异化合物和13%的甲基-2-辛醛,该化合物对与二乙胺的缩合和进一步氢化反应更具抵抗力。