Influence of the nature of the base electrolyte on the regioselectivity of the cathodic hydrodimerization of 1-acetylnaphthalene in an aprotic medium
作者:V. P. Gul'tyai、T. Ya. Rubinskaya、A. S. Mendkovich
DOI:10.1007/bf00965434
日期:1991.2
The electrolysis of 1-acetylnaphthalene at a controlled potential [DMF, Ba.(ClO4)2] leads to the formation of 5-acetyl-1,2,4,5-tetrahydro-2-methyl-2-(1-naphthyl)-1,4-methano-3-benzoxepine (yield of 60%); this is explained by the stabilization of the dimeric dianion of the "head-tail" type by the Ba2+ cations. The formation of 2,3-dimethyl-2,3-di-(1-naphthyl)-butane-2,3-diol is observed with the acylotropic rearrangement of the intermediate anion, leading to 2-acetylnaphthalene, in the presence of lithium cations.
Clar,E. et al., Tetrahedron, 1970, vol. 26, p. 5467 - 5478
作者:Clar,E. et al.
DOI:——
日期:——
InCl<sub>3</sub>-Catalyzed Reductive Coupling of Aromatic Carbonyl Compounds in the Presence of Magnesium and Chlorotrimethylsilane
作者:Kenji Mori、Seiji Ohtaka、Sakae Uemura
DOI:10.1246/bcsj.74.1497
日期:2001.8
Reductive homocoupling of aromatic aldehydes and ketones has been achieved in tetrahydrofuran at room temperature using a catalytic amount of InCl3 (0.005–0.1 molar amount) under nitrogen atmosphere in the presence of both chlorotrimethylsilane and magnesium metal (Mg turnings) to provide the corresponding 1,2-diols in good to moderate yields with a high diastereoselectivity.