Tandem <i>C</i>- and <i>O</i>-alkylative annulation of β-ketosulfones with 1,2-bisbromomethyl arenes: one-pot construction of sulfonyl indanes and dioxadibenzofused macrocycles
作者:Nai-Chen Hsueh、Kuan-Ting Chen、Meng-Yang Chang
DOI:10.1039/d2ob02199d
日期:——
transition-metal-free, base-mediated tandem C- and O-alkylative annulation of β-ketosulfones with 1,2-bisbromomethyl arenes with moderate to excellent yields under open-vessel reaction conditions. In the overall reaction process, two carbon–carbon (C–C) and two carbon–oxygen (C–O) bonds are formed. Various base-promoted reaction conditions are screened for this one-pot easy-to-operate conversion.
在此,描述了用于构建磺酰基茚满和二恶二苯并稠合大环化合物的串联合成路线。该策略涉及不含过渡金属、碱介导的β-酮砜与 1,2-双溴甲基芳烃的串联C-和O-烷基化环化反应,在开放容器反应条件下具有中等至优异的收率。在整个反应过程中,形成两个碳-碳(C-C)键和两个碳-氧(C-O)键。为这种易于操作的一锅法转化筛选了各种碱促进反应条件。