Preparation of N-arylamines from 2-oxo-7-azobicyclo[4.1.0]heptanes
A wide range of N-phenylated secondary amines were prepared directly from 2-oxo-7-azobicyclo[4.1.0]heptanes using 4-nitrobenzoic acid as acid catalyst. The intermediate enol esters could also be isolated under similar conditions. A catalytic cycle is proposed.
Barros, M. Teresa,Dey, Suvendu S.,Maycock, Christopher D.,Rodrigues, Paula
scheme or table
p. 6263 - 6268
(2012/08/28)
Synthesis of α- and/or γ-benzoyloxy-α,β-enones from α-halo-α,β-enones
Sodium benzoate reacts with α-halo-α,β-enones in the presence of tetrabutylammonium hydrogensulfate or 18-Crown-6 to afford α- and/or γ-benzoyloxylated α,β-enones in good yield. The α/γ and γ/γ′ selectivities are dependent on the substrate and reagent. Sodium benzoate reacts with α-halo-α,β- enones in the presence of tetrabutylammonium hydrogensulfate or 18-Crown-6 to afford α- and/or γ-benzoyloxy-α,β-enones in good yield. The α/γ and γ/γ′ selectivities are dependent on the substrate and reagent.
Hayashi, Yujiro,Shoji, Mitsuru,Kishida, Satoshi
p. 681 - 685
(2007/10/03)
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