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本文分别以三(对甲基苯基)膦,亚磷酸三(对甲基苯基)酯,亚磷酸三(对氯苯基)酯,亚磷酸三(邻甲氧基苯基)酯,亚磷酸三苯基酯等为配位体,以二羰基乙酰丙酮铑为催化剂母体,研究1—庚烯醛化反应的动力学和反应产物的分布,用动力学结果和测得的催化剂体系的红外光谱羰基伸缩振动频率与文献[1]结果比较,进一步说明烯醛化反应的速率不仅决定于其反应的控制步骤,而且与反应体系中活化络合体的浓度有关.亚磷酸三(3,4-二甲基苯基)酯有利于活化络合体的形成,其作为配位体时,醛化反应的速率较其它配位体高得多,同时由于其较大的立体化学效应,提高了对产物中直链醛的选择性.
In this paper, tris (p-methylphenyl) phosphine, tris (p-methylphenyl) phosphite, tris (p- chlorophenyl) phosphite, tris (o-methoxyphenyl) phosphite, Triphenyl phosphate as ligand and rhodium dicarbonyl acetylacetonate as catalyst matrix to study the kinetics of 1-heptenalization and the distribution of the reaction products. The kinetic results and the measured infrared spectra of the catalyst system Spectral carbonyl stretching vibrational frequencies compared with the results of literature [1], further that the rate of enalination reaction not only depends on the reaction control steps, but also with the reaction system activation complex concentration. Tris (3,4 -dimethylphenyl) ester favors the formation of an activated complex which, as a ligand, has a much higher rate of hydroformylation than the other ligands and at the same time increases its effect on the stereochemistry of Selectivity of linear aldehydes in products.