Hydrodimerisation electrochimique de cetones aromatiques encombrees en milieu aprotique et en presence de chlorure de chrome
作者:F. Fournier、J. Berthelot、Y.L. Pascal
DOI:10.1016/s0040-4020(01)91180-9
日期:1984.1
The electrochemical reduction of hindered aromatic ketones which are difficult to reduce alone, can be achieved in an aprotic medium (DMF) on a mercury pool cathode, in presence of Cr(III) chloride, at the reduction potential or the Cr(II)/Cr(0) system, but at a less negative potential than that of the ketone itself. There is selective hydrodimerisation into an α-glycol, with total lack of polymerisation
Photochemistry of two diphenyl β,γ-enones and a series of methyl- and phenyl-substituted α-phenyl ketones
作者:Margareth J. C. M. Koppes、Astrid M. Crabbendam、Hans Cerfontain
DOI:10.1002/recl.19881071205
日期:——
The photochemistry of the diphenylβ,γ-enones 2 and 3 and the methyl- and phenyl-substitutedα-phenylketones 4-9 has been studied, using mainly benzene as solvent. Irradiation of 2 with λ 300 nm leads to the 1,3-acyl shift (1,3-AS) product 17, relatively small amounts of the decarbonylation products 15 and 16, and the photo-oxidation products benzophenone (18) and the α,β-unsaturated aldehyde 19.