摘要: Activity in the photochemistry of α-diketones has continued unabated past decade. In addition to special attention absorption and emission spectra, photoelectron spectroscopy been applied widely. Areas recent emphasis include (1) cyclobutene- (2) cyclobutanediones, (3) bridged cyclohexenediones, (4) reactions presence oxygen, particularly epoxidation olefins. The more venerable aspects such as inter- intramolecular hydrogen atom abstraction additions multiple bonds continue receive attention. A considerable number examples synthetic applications have accumulated years. parallel, mechanistic understanding broadened considerably.