关键词: 夺氢反应, 9,10-二氰基蒽, 苄醇, 甲苯, 反应机理

Abstract: Hydrogenabstraction reactions of benzyl alcohols (benzyl alcohol and cliphenyl methanol) and toluenes (toluene and p-dimethyl benzene) sensitized by electron deficient sensitizer 9,10-dicyanoanthracene (DCA) were studied. Based on the experimental data, it was proved that the above two kinds of reactions occur through two different mechanisms. For henzyl alcohols, the reaction proceeds via excited singlet of DCA(¹DCA^*) and then abstracts hydrogen atom from substrates to form the corresponding ketones. For toluenes, the reaction undergoes electron trasfer first and DCA anion radical (DCA^-) abstracts hydrogen ion from substrates cation to form the corresponding bibenzyl.

Key words: hydrogen abstraction reaction, 9,10-dicyanoanthracene, benzyl alcohols, toluenes, mechanisms