化学学报 ›› 1993, Vol. 51 ›› Issue (5): 490-495. 上一篇    下一篇

研究论文

给电子试剂在共轭二烯或炔烃催化选择加氢中的作用

张同生;徐筠;廖世健   

  1. 中国科学院大连化学物理研究所;中国科学院上海有机化学研究所;中国科学院金属有机化学开放实验室
  • 发布日期:1993-05-15

Role if electron donors on the selective hydrogenation of conjugated dienes or alkyne

ZHANG TONGSHENG;XU YUN;LIAO SHIJIAN   

  • Published:1993-05-15

在环戊二烯、叔丁基乙炔使用负载型均相催化剂PdCl2-PVP或PdCl2-PVP/Al2O3选择加氢过程中, 单烯的高选择性一般仅能维持很短时间, 加入合适的给电子试剂如联氨、α,α'-联吡啶、乙二胺、三乙胺、三苯磷等, 可以减缓甚至停止单烯的加氢, 从而维持单烯的高选择性。

关键词: 环戊二烯, 三苯基膦, 共轭双键化合物, 乙二胺, 异戊二烯, 联氨, 乙炔 P, 联吡啶, 氯化钯, 三乙胺

In the selective hydrogenation of cyclopentadiene, isoprene or tert-butylacetylene using heterogenized homogeneous catalyst, the high selectivity of monoene formation only appears in a very short time interval. The addition of suitable electron donors such as N2H4, a,a'-dipyridine, ethylenediamine, PPh3 etc. can decrease or even cease the monoene hydrogenation and thereby keep the high monoene selectivity after reaching its max.

Key words: CYCLOPENTADIENE, TRIPHENYLPHOSPHINE, CONJUGATED DOUBLE BOND COMPOUNDS, ETHANEDIAMINE, ISOPRENE, HYDRAZINE, ACETYLENE P, BIPYRIDINE, PALLADIUM CHLORIDE, TRIETHYL AMINE

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