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本文研究了甲素敏化的烯烃光氧化反应,证实了甲素有产生~1O_2的作用。测定了甲素敏化的~1O_2的量子产率,还研究了甲素敏化的反式芪的光氧化反应。分离并鉴定了产物。主产物为1-苯甲酰甲叉-2,5-过氧桥-6-羟基环己烯-3及它的异构体。结果表明,可能是经由双桥环过氧化物(diendoperoxide)的质子重排得到的。在这个反应中,活泼态的氧对苯乙烯的1.4-环加成占优势,这是一个新结果。
In this paper, a-sensitized olefins photooxidation reaction was studied, confirmed the presence of a ~ 1O_2 role. The quantum yield of ~ 1O_2 sensitized by A was measured, and the photooxidation of trans-stilbene sensitized by A was also studied. The product was isolated and identified. The main product is 1-phenacylidene-2,5-peroxy-6-hydroxycyclohexene-3 and its isomers. The results show that it may be obtained via proton rearrangement of diendoperoxide. In this reaction, the active form of oxygen dominated the 1.4-cycloaddition of styrene, a new result.