An Iterative Catalytic Route to Enantiopure Deoxypropionate Subunits: Asymmetric Conjugate Addition of Grignard Reagents to α,β-Unsaturated Thioesters
作者:Renaud Des Mazery、Maddalena Pullez、Fernando López、Syuzanna R. Harutyunyan、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1021/ja053020f
日期:2005.7.1
A highly enantioselective (up to 96% ee) conjugate addition of Grignard reagents, in particular, MeMgBr, to alpha,beta-unsaturated thioesters is provided as well as its application to a diastereo- and enantioselective iterative route to syn- and anti-1,3-dimethyl arrays and deoxypropionate subunits. The versatility of the method is illustrated in the synthesis of (-)-lardolure, a multimethyl-branched
提供了一种高度对映选择性(高达 96% ee)的格氏试剂,特别是 MeMgBr,与 α,β-不饱和硫酯的共轭加成,以及其在非对映选择性和对映选择性迭代路线中的应用,以合成和抗 1 ,3-二甲基阵列和脱氧丙酸亚基。该方法的多功能性体现在 (-)-lardolure 的合成中,这是一种多甲基分支的昆虫天然信息素。