Aluminum-catalyzed direct conversion of lactones to selenolactones in the presence of elemental selenium and its application in the indium-catalyzed syntheses of dibenzyl selenides from benzyl acetates
作者:Norio Sakai、Yasushi Kino、Yohei Ogiwara、Kento Ishida
DOI:10.1016/j.tet.2024.133978
日期:2024.5
Se rather than elemental S. Additionally, an In(OAc)/PhSiH (OAc = acetate) reducing system effectively catalyzed the direct conversion of linear benzyl acetates, which constitute substructures of lactones, and elemental Se to dibenzyl selenide derivatives.
含硒化合物具有新颖的化学性质和独特的药理作用。尽管已经报道了多种制备硒酯的方法,但对相关环状硒酯的合成关注仍然不足。合成硒内酯的常规方法通常涉及多步过程。在本研究中,AlBr/PhSiH(Ph = 苯基)还原体系选择性催化 γ-芳基-γ-内酯和元素 Se 向 γ-芳基-γ-硒内酯的一锅转化,收率良好。该还原系统强烈激活元素 Se 而不是元素 S。此外,In(OAc)/PhSiH (OAc = 乙酸酯) 还原系统有效催化直链乙酸苄酯(构成内酯的子结构)和元素 Se 直接转化为二苄基硒化物衍生物。