18229-30-6Relevant academic research and scientific papers
Palladium-catalyzed reactions of acylzirconocene chloride with organic halides
Hanzawa, Yuji,Tabuchi, Nobuhito,Taguchi, Takeo
, p. 6249 - 6252 (1998)
Palladium-catalyzed reactions of nonanoylzirconocene chloride 1 with aryl halide, acid halides, and allylic halides gave the acylated compounds through a nucleophilic attack of an 'unmasked' acyl anion in fair to excellent yields. In an analogous way, allylic acetate gave an acyl substituted product through the reaction of 1.
Homogeneous and heterogeneous catalytic (dehydrogenative) oxidation of oleochemical 1,2-diols to α-hydroxyketones
Vu, Nam Duc,Guicheret, Boris,Duguet, Nicolas,Métay, Estelle,Lemaire, Marc
supporting information, p. 3390 - 3399 (2017/07/28)
Herein, the preparation of methyl oleate α-hydroxyketone from the corresponding 1,2-diol was investigated using both homogeneous and heterogeneous systems. Homogeneous conditions using a Pd(OAc)2/neocuproine complex were first developed using oxygen as a sole oxidant under mild conditions (MeOH, 50 °C). Under these conditions, the conversion of diol reached 95%, and α-hydroxyketone was obtained with 97% selectivity. The access to α-hydroxyketone has also been studied by dehydrogenation using a range of heterogeneous catalysts under solvent-free conditions at high temperatures (160-180 °C). Dehydrogenation using activated Ru/C under vacuum provided α-hydroxyketone with 93% conversion and 82% GC yield. The optimized conditions were applied to a range of oleochemical diols, including a vegetable oil derivative, to obtain the corresponding α-hydroxyketones with up to 74% isolated yields.
Pd-catalyzed regioselective acylation of α,β-unsaturated ketone derivatives by acylzirconocene chloride as an acyl group donor
Hanzawa, Yuji,Tabuchi, Nobuhito,Narita, Kensuke,Kakuuchi, Akito,Yabe, Masaya,Taguchi, Takeo
, p. 7559 - 7571 (2007/10/03)
Acylzirconocene chlorides reacted with α,β-unsaturated ketones (α,β-enone or -ynone) to give regioselectively 1,2- or 1,4-products under Pd-catalyzed conditions. In the reactions of α,β-enones, excellent regioselectivity was attained by the choice of the
