Efficient Photocatalytic Oxygenation of Aromatic Alkene to 1,2-Dioxetane with Oxygen via Electron Transfer
作者:Kei Ohkubo、Takashi Nanjo、Shunichi Fukuzumi
DOI:10.1021/ol051696+
日期:2005.9.1
Photocatalytic oxygenation of tetraphenylethylene (TPE) with oxygen occurs efficiently via electron-transfer reactions of TPE and oxygen with a photogenerated electron transfer state of 9-mesityl-10-methylacridniium ion, followed by the radical-coupling reaction between TPE radical cation and O-2(center dot-) to produce 1,2-dioxetane selectively. The further photocatalytic cleavage of the O-O bond of dioxetane affords benzophenone as the final oxygenated product.