The present invention refers to aryl beta diketones of the formula (I) wherein Y, R1, R2 and R3 have the same meaning as given in the description. The invention further refers to fragrance compositions and fragranced articles comprising them.
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Page/Page column 14; 22; 23
(2017/12/09)
Direct synthesis of 1,3-diketones by Rh-catalyzed reductive α-acylation of enones
(Chemical Equation Presented) 1,3-Diketones were synthesized from α,β-unsaturated ketones by treatment with acid chlorides and Et 2Zn in the presence of RhCl(PPh3)3. This is a very simple and extremely chemoselective reaction to give the adduct at the α-position of α,β-unsaturated ketones.