The invention relates to a method for hydroformylation of unsaturated compounds such as olefins and alkynes using mixtures of synthesis gas (CO/H
2
), in which either the unsaturated compounds and a catalyst are heated to a reaction temperature of 60 to 200° C. and the synthesis gas is then added, or the unsaturated compounds and the catalyst are brought into contact with pure CO at normal temperature in a preformation step, then are heated to reaction temperature and on reaching the reaction temperature the CO is replaced by the synthesis gas. The pressure is 1 to 200 bar and the CO:H
2
ratio in the synthesis gas is in the range from 1:1 to 50:1. The iridium catalyst used comprises a phosphorus-containing ligand in the iridium:ligand ratio in the range from 1:1 to 1:100. With high catalyst activities and low catalyst use, very high turnover frequencies are achieved.
该发明涉及一种利用合成气(CO/H2)混合物对烯烃和
炔烃等不饱和化合物进行氢甲酰化的方法,其中不饱和化合物和催化剂被加热至60至200°C的反应温度,然后加入合成气,或者在预形成步骤中将不饱和化合物和催化剂与纯CO在常温下接触,然后加热至反应温度,当达到反应温度时,CO被合成气取代。压力为1至200巴,合成气中的CO:H2比在1:1至50:1的范围内。所使用的
铱催化剂包括含
磷配体,
铱:
配体比在1:1至1:100的范围内。具有高催化活性和低催化剂使用量,实现了非常高的周转频率。