Highly Stereoselective Synthesis of syn-1,3-Diols through a Sequential Titanium-Mediated Aldol Reaction and LiBH4 Reduction
作者:Judit Esteve、Sònia Matas、Miquel Pellicena、Javier Velasco、Pedro Romea、Fèlix Urpí、Mercè Font-Bardia
DOI:10.1002/ejoc.201000293
日期:——
α-tert-butyldimethylsilyloxy ketones followed by reduction of the resultant aldolates with LiBH4 provides a straightforward access to syn-1,3-diols. These diols, containing up to three new stereocentres, can be easily isolated in high yields after a simple work-up without any additional oxidative treatment, which confers to this procedure an appealing position to prepare stereoselectively such sort of structures
基于钛介导的手性 α-叔丁基二甲基甲硅烷氧基酮的羟醛反应的顺序转化,然后用 LiBH4 还原所得的醛醇化物,可以直接获得合成 1,3-二醇。这些包含多达三个新立体中心的二醇可以在简单的后处理后轻松以高产率分离,无需任何额外的氧化处理,这为该程序提供了一个有吸引力的位置,以立体选择性地制备此类结构。