作者:Muellen, K.、Schmickler, H.、Frei, B.、Wolf, H. R.
DOI:——
日期:——
Braude et al., Journal of the Chemical Society, 1952, p. 1419,1424
作者:Braude et al.
DOI:——
日期:——
A straightforward oxidation of dienones to 2-acetylfurans by selenium dioxide
作者:Zaesung No、Yung Bog Chae、Chan Jae Shin、Yongseog Chung
DOI:10.1016/s0040-4039(98)01272-6
日期:1998.8
Direct oxidation of (E)-4-(6-substituted-1-cyclohexenyl)-3-buten-2-ones (4a–7a) by seleniumdioxide afforded 2-acetyltetrahydrobenzofurans (4b–7b) in moderate to good yields. An inverse, stepwise [2+4] cycloaddition mechanism of the intermediate formation was proposed from conformational and electronic requirements of conjugated dienones and solvent effects of SeO2 oxidation.