申请人:Ciba-Geigy Corporation
公开号:US04533505A1
公开(公告)日:1985-08-06
Compounds of the formulae Z--CH.dbd.CH--Z.sub.1 (Ia) or CH.sub.2 .dbd.CH--Z.sub.2 --CH.dbd.CH.sub.2 (Ib), in which Z represents unsubstituted or substituted phenyl or naphthyl, Z.sub.1 represents hydrogen or has the same meaning as Z and Z.sub.2 represents unsubstituted or substituted phenylene, naphthylene or p-biphenylene or an unsubstituted or substituted stilbene radical, can be obtained in a simple and economical manner in accordance with a novel process by reacting ethylene, under a pressure of 0.1 to 20 bar, in the presence of a base and with the addition of specific palladium catalysts, such as palladium acetate, with appropriate acid halides. The compounds of the formulae Ia and Ib are valuable intermediates, in particular for the preparation of fluorescent brighteners or scintillators.
公式为Z--CH.dbd.CH--Z.sub.1 (Ia)或CH.sub.2.dbd.CH--Z.sub.2--CH.dbd.CH.sub.2 (Ib)的化合物,其中Z表示未取代或取代的苯或萘基,Z.sub.1表示氢或与Z具有相同的含义,Z.sub.2表示未取代或取代的苯基,萘基或p-联苯基或未取代或取代的stilbene基团,可以通过一种新的方法简单经济地制备得到,该方法是在碱的存在下,在压力为0.1至20巴的条件下,通过加入特定的钯催化剂,例如乙酸钯,与适当的酸卤反应乙烯。公式Ia和Ib的化合物是有价值的中间体,特别是用于制备荧光增白剂或闪烁体。