Preparation of 2-Zincio-1,3-Dithianes and Di(1,3-dithian-2-yl)zinc and Their Reaction with Highly Functionalized Halides and α,β-Unsaturated Carbonyl Compounds
作者:Vanda Cerè、Silvia De Angelis、Salvatore Pollicino、Alfredo Ricci、Ch. Kishan Reddy、Paul Knochel、Gérard Cahiez
DOI:10.1055/s-1997-1324
日期:1997.10
The title compounds were obtained by simple transmetallation of the corresponding lithium derivatives with ZnCl2 or ZnBr2. Contrary to 2-lithio-1,3-dithianes, 2-zincio-1,3-dithianes can react with a number of electrophiles bearing reactive functional groups to afford highly substituted 1,3-dithianes in satisfactory to excellent yields. The synthesis of the new organozinc derivative, di(1,3-dithian-2-yl)zinc, which effectively adds to enones, is also reported.
标题化合物是通过相应锂衍生物与ZnCl2或ZnBr2的简单置换反应获得的。与2-锂基-1,3-二硫烷不同,2-锌基-1,3-二硫烷能够与多个带有活性官能团的路易斯酸反应,以良好的至优异的产率获得高度取代的1,3-二硫烷。还报道了新型有机锌衍生物二(1,3-二硫烷-2-基)锌的合成,该化合物能有效地加成到烯酮上。