Stereoselective preparation of (E)- and (Z)-di- and trisubstituted 1,3-butadienes
作者:Takeshi Takeda、Keiichiro Tateishi、Akira Tsubouchi
DOI:10.1016/j.tetlet.2015.04.114
日期:2015.6
desulfurizative titanation of trimethylsilyl-substituted allylic sulfides with the titanocene(II)–1-butene complex, with ketones produced β-hydroxy silanes with good to complete anti-selectivity. Both (E)- and (Z)-1,1-disubstituted as well as 1,1,2-trisubstituted 1,3-butadienes are obtained stereoselectively by their Peterson elimination under acidic or basic conditions.
由三甲基甲硅烷基取代的烯丙基硫化物与钛茂(II)-1-丁烯配合物的脱硫钛化反应所生成的γ-(三甲基甲硅烷基)烯丙基钛烯与酮的反应生成了具有良好的完全反选择性的β-羟基硅烷。(E)-和(Z)-1,1-二取代的以及1,1,2-三取代的1,3-丁二烯均通过在酸性或碱性条件下通过彼得森消除而立体选择性地获得。