88392-71-6Relevant articles and documents
(2+2) Photocycloaddition of the Carbon-Nitrogen Double Bond of Quinoxalin-2(1H)-ones to Electron-Deficient Olefins
Nishio, Takehiko
, p. 827 - 832 (2007/10/02)
The photochemical reactivity of the quinoxalin-2(1H)-ones 1a-i with electron-deficient olefins such as acrylonitrile (2a),methacrylonitrile (2b), methyl acrylate (2c), methyl methacrylate (2d), and vinyl acrylate (2e) is described.Irradiation of the quinoxalin-2(1H)-ones 1a-1f,i in the presence of electron-deficient olefins (2a-e) gave the novel regiospecific (2+2) cycloadducts (3-18) of the carbon-nitrogen double bond of 1 and olefin 2.The photoreaction of the quinoxalin-2(1H)-ones 1 with olefins 2 occurs from a triplet state.