Acid-Promoted Reactions of Schiff’s Bases with Ketene Dithioacetal, Vinyl Sulfides, and 1,2-Propadienyl Sulfides
作者:Koichi Narasaka、Takanori Shibata、Yujiro Hayashi
DOI:10.1246/bcsj.65.1392
日期:1992.5
and olefinic nucleophiles containing an alkylthio substituent. Ketene dithioacetal or 2-(methylthio)allylsilane reacts with Schiff’s bases in the presence of trifluoromethanesulfonic acid to afford β-amino acid equivalents or homoallylic amines, respectively. On the other hand, ene reaction proceeds between 1-alkyl-1,2-propadienyl sulfides and Schiff’s bases by treatment with AlCl3, giving 1,3-dienes
在希夫碱和含有烷硫基取代基的烯属亲核试剂之间进行几种类型的加成反应。在三氟甲磺酸存在下,乙烯酮二硫代乙缩醛或 2-(甲硫基)烯丙基硅烷与席夫碱反应,分别生成 β-氨基酸等价物或高烯丙基胺。另一方面,通过用 AlCl3 处理,在 1-烷基-1,2-丙二烯基硫化物和席夫碱之间进行烯反应,得到 1,3-二烯。