水相条件下烯烃的选择性氧化

Selective oxidation of olefins using H_2O_2,V_2O_5,PTC and water

以水为媒介,甲基三辛基氯化铵(Aliquat 336)为相转移催化剂,五氧化二钒(V_2O_5)为催化剂,用双氧水(H_2O_2)对烯烃进行氧化,讨论了V_2O_5、Aliquat 336和H_2O_2的用量对氧化反应的影响,确定了水相氧化体系的最优反应比,即烯烃:H_2O_2:V_2O_5:甲基三辛基氯化铵=1:2.5:0.04:0.15。通过对不同烯烃的氧化实验,证明该反应体系具有选择性,即可以选择性氧化富电子的烯烃。

A series of olefins were oxidized using H202, V205, Aliquat 336 and water. The influence of catalyst, dosage of PTC and hydrogen peroxide were discussed.The most optimum condition was as follows, substrate ： V205： H202： Aliquat 336 = 1： 0.04： 2.5： 0.15. The experimental results of oxidation of different olefins showed that the electron rich olefins could be selectively oxidized in the system built by H202, V205, Aliquat 336 and water.